Hector Hernán Hoyos (Hoyos) appeals from the judgment of conviction for conspiracy to possess cocaine with the intent to distribute in violation of 21 U.S.C. § 841(a)(1) (1982). After the denial of his suppression motions, Hoyos entered a plea of guilty conditioned upon his right to appeal the adverse rulings. Subsequently, he filed a motion to withdraw his guilty plea. This motion was also denied.
Hoyos seeks reversal on the following grounds:
(1) He was arrested without probable cause.
(2) The protective sweep of his residence was an unreasonable search.
(3) The district court erred in concluding that probable cause supported the issuance of a search warrant.
(4) The district court abused its discretion in denying his motion to withdraw his guilty plea.
We affirm because we have concluded that each of these contentions is without merit. We address each issue and the facts pertinent thereto under separate headings.
I.
EXISTENCE OF PROBABLE CAUSE TO ARREST HOYOS
On September 12, 1986, Los Angeles County Deputy Sheriff Thomas Mulligan,1 received an anonymous telephone call that informed him that persons living at 356 Eagle Nest, Diamond Bar, California, were dealing in narcotics. The residents did not appear to be employed. Periodically, strangers in new cars would arrive at the residence and stay for short periods of time. Deputy Mulligan was also informed that the Glendale Police Department was at that location approximately five months earlier.
Deputy Mulligan contacted a narcotics investigator at the Glendale Police Department. He was informed that the Glendale Police Department had received information that 356 Eagle Nest was a safe house for storing large amounts of cocaine. The Glendale investigators abandoned their investigation after observing that the Eagle Nest house appeared to be empty and unused.
On the same date, Deputy Mulligan contacted United States Customs, Special Agent Ronald L. Ingleby2 and advised him of the information he had obtained concerning the Eagle Nest location. On September 19, 1986, Special Agent Ingleby observed two men and a woman remove one dozen full, heavy, gray plastic bags from a silver colored Buick automobile and take them into the residence at 356 Eagle Nest.
On September 22, 1986, Deputy Mulligan was assigned to conduct a surveillance of the residence located at 356 Eagle Nest. At 9:30 a.m., Deputy Mulligan observed Misael Pulgarin leave the residence. Deputy Mulligan followed him to a Denny’s Restaurant in the City of Brea.
En route, Deputy Mulligan observed Pul-garin drive slowly, then rapidly increase his speed, make U-turns in the middle of streets, slow down at green lights, and then accelerate through intersections when the lights turned yellow. Deputy Mulligan noted that Pulgarin intermittently used a cellular telephone in the car. Deputy Mulligan stated in his affidavit that “[b]ased upon more than 50 previous occasions of surveillance of narcotics traffickers, [he] recognized this behavior as counter-surveillance driving; that is, an attempt to detect law enforcement surveillance.”
At the restaurant, Pulgarin met Thomas Cuellar. After 15 to 20 minutes, they left in a blue Mazda 626.
On September 23, Deputy Mulligan resumed surveillance of the Eagle Nest residence at 8:00 a.m. Pulgarin left the resi*1134dence at 8:45 a.m. in a brown Nissan Sen-tra and drove to Hunny’s Restaurant.
Deputy Mulligan observed Pulgarin stop twice to make telephone calls. Each time Pulgarin dialed two sets of numbers and then received a return telephone call. Deputy Mulligan stated in his affidavit in support of the search warrant that it is a common practice among drug traffickers to communicate through the use of a “beeper.” These telephone calls were referred to by Deputy Mulligan as “beeper calls.” At Hunny’s, Pulgarin met Hoyos, who had arrived there in a white Mazda 626. The two men left the restaurant and drove their respective cars to 15603 Starbuck Avenue in Whittier.
On September 24, 1986, Deputy Mulligan began surveillance of the Starbuck residence. At 2:00 p.m., he observed Hoyos drive away in the white Mazda. Deputy Mulligan observed Hoyos drive to a public telephone. He did not travel a direct route on through streets. Instead, Hoyos used residential streets and drove through a school zone. Deputy Mulligan testified that Hoyos did not use the route that “based upon eleven years of familiarity with the area, would have been most direct.” Deputy Mulligan further testified that, based on his experience as a narcotics investigator Hoyos “did so in an effort to detect surveillance.”
At the public telephone, Deputy Mulligan observed Hoyos make two “beeper” calls. Hoyos then pulled behind a building and stayed for twenty to twenty-five minutes. After that he drove to a Del Taco and made one or two more beeper calls.
At 8:50 a.m., on September 25, 1986, Deputy Mulligan returned to the Eagle Nest residence to resume his surveillance. He observed Pulgarin leave at 9:45 a.m. in a gray Plymouth Reliant.
Sergeant Thomas Stover,3 of the Los An-geles Sheriff's Office followed Pulgarin to the Denny’s Restaurant in Brea. Pulgarin made several telephone calls from public telephones en route. He arrived at Denny’s at approximately 10 a.m. Pulgarin waited in a booth for 15 to 20 minutes at which time Cuellar joined him. They remained in the restaurant for 30 minutes.
Pulgarin and Cuellar left the restaurant together and drove to a Sears store in La Habra. Special Agent Ingleby joined the surveillance at the Sears store.
Sergeant Stover and Special Agent Ingle-by followed Pulgarin and Cuellar to the parking lot at the Denny’s restaurant in La Habra. There, Special Agent Ingleby observed Pulgarin and Cuellar meet Hoyos and Leonardo Amaya. Amaya gave Pulga-rin a key. Pulgarin used it to enter a gold Ford pick-up truck. Pulgarin drove the truck out of the restaurant parking lot. Amaya then entered the passenger side of a brown Nissan Sentra driven by Hoyos. Cuellar entered the gray Plymouth Reliant.
The gray Reliant and the brown Nissan followed the Ford pick-up truck into the parking lot of a nearby Coco’s Restaurant. Amaya got out of the brown Nissan and walked over to the Ford pick-up. Pulgarin returned the key to Amaya. Amaya left Coco’s parking lot in the truck.
Special Agent Ingleby followed Amaya to the parking lot of a shopping center in Diamond Bar. There he observed Pulgarin and Cuellar in the gray Reliant. They pulled in behind Amaya. Both vehicles were then driven to the vicinity of the Eagle Nest Residence.
Early that afternoon, Deputy Mulligan observed the gray Reliant and the gold Ford pick-up at the Eagle Nest residence. The pick-up was parked in the middle of the garage. Three-quarters of the truck was inside the garage. The officers observed five persons in the garage, including Pulga-rin, Amaya, and Cuellar. Shortly thereafter, Amaya drove away in the Ford pickup truck.
Sergeant Stover followed Amaya into a K-Mart parking lot. Amaya left the truck and walked towards a McDonald's restaurant. While Sergeant Stover was still in *1135his car he made eye contact with Amaya. Amaya increased his speed. Sergeant Sto-ver left his car and followed Amaya into the restaurant but lost sight of him. Sergeant Stover again observed Amaya about five minutes later outside an Exxon service station, standing near a public telephone. Sergeant Stover arrested Amaya and drove him back to the truck. The truck was searched. It contained over one hundred kilograms of cocaine.
After Amaya’s arrest and the seizure of the cocaine, Deputy Mulligan directed Los Angeles County Deputy Sheriff Robert Schelnutt4 to go to the Starbuck residence to secure the premises. He told Deputy Schelnutt about the seizure of 100 kilos of cocaine and informed him that based on his observation during the investigation, he expected other persons involved in the narcotics transaction to be at the residence. Deputy Mulligan also gave Deputy Schelnutt Hoyos’ physical description. In addition, he informed Deputy Schelnutt that Hoyos drove a white Mazda. Deputy Schelnutt was also directed to secure the premises so that evidence would not be destroyed while a search warrant was obtained. Deputy Schelnutt was also instructed to detain, or, if necessary, arrest additional suspects.
Deputy Schelnutt proceeded to the Star-buck residence. He was accompanied by several other Los Angeles County Sheriff’s deputies including Richard Love and Frank Rodella.5 When they arrived at the residence, the officers saw the white Mazda previously described to them in the driveway. The officers then observed two women come out the front door of the residence. After these observations were communicated to Deputy Mulligan via radio transmission, he directed the officers to detain the women. After the women entered their car, Deputy Schelnutt approached them, showed them his badge, and informed them he was conducting a narcotics investigation. At that time, the other officers approached the house.
As Deputy Love approached the house, he noticed Hoyos and a woman watching him from the backyard through a fence. Deputy Love drew his gun and yelled “Sheriff’s Department”, “freeze”, “hold it”, “police”, or words to that effect. Deputy Love testified that at that time he was dressed in his green sheriff’s field jacket and was not more than twelve feet away from Hoyos. Both Hoyos and the woman ran to the back door of the house. Deputy Love apprehended Hoyos just as he was pulling open the screen door.
Hoyos argues that “even if all the facts known to all of the officers are considered” probable cause for his arrest without a warrant is lacking. We disagree.
A warrantless arrest is valid if it is supported by probable cause. United States v. Hillison, 733 F.2d 692, 697 (9th Cir.1984); United States v. Bernard, 607 F.2d 1257, 1265 (9th Cir.1979). Determination of the existence of probable cause is a mixed question of law and fact in which the legal issues predominate, and is therefore subject to de novo review. United States v. Smith, 790 F.2d 789, 791 (9th Cir.1986). However, the underlying facts as found by the district court are reviewed for clear error. United States v. Greene, 783 F.2d 1364, 1367 (9th Cir.), cert. denied, 476 U.S. 1185, 106 S.Ct. 2923, 91 L.Ed.2d 551 (1986).
The test for probable cause is whether the facts and circumstances within the arresting officer’s knowledge are sufficient to warrant a prudent person to believe a suspect has committed, is committing, or is about to commit a crime. Id. The experience and expertise of the officers involved in the investigation and arrest may be considered in determining probable cause. *1136Hillison, 733 F.2d at 697; Bernard, 607 F.2d at 1266. The arresting officer need not have personal knowledge of the facts sufficient to constitute probable cause. Id. at 1267. Probable cause may be based on the collective knowledge of all of the officers involved in the investigation and all of the reasonable inferences that may be drawn therefrom. Id.
The testimony found credible by the district court was sufficient to warrant a prudent person with the officers’ combined experience in narcotics investigations to believe that Hoyos was a knowing participant in a conspiracy to distribute a large quantity of narcotics. Prior to Hoyos’ arrest the team of officers investigating this case had gathered many incriminating facts. Hoyos was observed driving in a manner that is typical of counter-surveillance techniques used by persons involved in large scale narcotics transactions. In addition, Hoyos made “beeper” telephone calls from public telephone booths. Narcotics dealers in Los Angeles County use beepers and public telephones in plying their illicit trade.
The officers involved in this matter had many years of experience investigating illegal narcotics transactions. Hoyos’ conduct had special significance in their eyes. “Conduct which appears innocent to a lay person may have an entirely different significance to an experienced narcotics officer.” United States v. Hicks, 752 F.2d 379, 384 (9th Cir.1985).
The evidence shows that Hoyos was present at a meeting in a restaurant parking lot with three other persons including Amaya. Amaya was arrested later that day for possession of a large quantity of cocaine. Hoyos was present when Amaya gave Pulgarin the key to the pick-up truck that later was used to transport 100 kilos of cocaine. Amaya then drove away in a car driven by Hoyos that followed the pickup truck to a second restaurant parking lot.
A short time later, Amaya was seen with four other persons gathered around the pick-up truck inside the garage at Eagle Nest house. Later that day, Amaya drove the pick-up truck to a shopping center parking lot. There, one hundred kilos of cocaine was found in the truck. The fact that a large quantity was seized from Ama-ya was communicated to the officers who were directed to secure the house and to make arrests, if necessary.
Also of significance in assessing the presence of probable cause is the fact that Hoyos fled towards the house after he was told to “Freeze” by an officer wearing a green Los Angeles County Sheriff’s field jacket.
In determining the existence of probable cause we must look to the totality of the circumstances. The fact that some of these acts, if reviewed separately, might be consistent with innocence is immaterial. United States v. Casimiro-Benitez, 533 F.2d 1121, 1123 (9th Cir.) (quoting Hernandez v. United States, 353 F.2d 624, 628 (9th Cir.1965), cert. denied, 384 U.S. 1008, 86 S.Ct. 1972, 16 L.Ed.2d 1021 (1966)), cert. denied, 429 U.S. 926, 97 S.Ct. 329, 50 L.Ed.2d 295 (1976). We are satisfied that a prudent person would believe that Hoyos was involved in a narcotics transaction.
In his opening brief, Hoyos concedes that it is the law of this circuit that “the knowledge of one officer is imputable to another for purposes of probable cause.” Nevertheless, Hoyos contends that this rule does not apply because Deputy Love was not instructed to arrest Hoyos, nor was he given sufficient information to constitute probable cause. We rejected the same argument in Bernard. There, we held that the arresting officer need not be aware of all the facts and circumstances known to the other officers participating in the arrest. 607 F.2d at 1267. We are persuaded that probable cause existed for Hoyos’ arrest without a warrant.
II.
PROTECTIVE SWEEP OF THE STARBUCK RESIDENCE
Hoyos presents a two-fold challenge to the validity of the initial entry into his residence. First, he argues that the officers did not have an “articulable reason to believe that others would be, in fact, inside *1137the residence.” Secondly, he contends that, assuming arguendo that articulable facts existed, the protective sweep exception to the requirement of a search warrant to enter a residence is inapplicable where the arrest takes place outside.
As set forth above, Deputy Love first observed Hoyos looking at him through a fence from the backyard. Deputy Love ordered him to halt.
As Deputy Love attempted to arrest Ho-yos, Deputy Rodella approached the front of the house with a second officer, Deputy Jameson. Deputy Rodella testified that he heard Deputy Love state that he had “two people coming out.” According to Deputy Rodella, Deputy Love yelled at them “Sheriffs Narcotics. Freeze.” Deputy Rodella also testified that he heard Deputy Love say “ ‘they are running back inside’ and that is when myself and Deputy Jameson ran to the front door and I forced open the front door.” Deputy Rodella broke the lock with a small hand-held ram. Deputy Jameson searched the left side of the house for other persons connected with the conspiracy, while Deputy Rodella covered him. Thereafter, Deputy Rodella searched the right side of the house. While clearing the house, Deputy Rodella saw an open chest in one of the rooms, filled with a large amount of money, a money counting machine, and a calculator.
Deputy Rodella testified that he had been assigned to assist in securing the Starbuek residence and apprehend any suspects. He stated that before he entered the residence he knew that a large cocaine seizure had been made and that additional suspects and evidence were expected to be found at the Starbuek residence. In his affidavit filed in opposition to the motion to suppress, Detective Rodella stated that based upon the information he had received regarding the cocaine seizure, the fact that four people had already been seen at the residence and his previous experience participating in the executions of search warrants or the securing of residences over 100 times he felt there was a need to enter the house because he believed “there were others in the house who could pose a danger” to the officers’ safety or could “attempt to destroy evidence.” At the hearing on the motion to suppress, Deputy Ro-della testified that, in his opinion, if there are “four persons, there’s possibly six, eight, or more and that could jeopardize the safety of the officers detaining these people or they could possibly destroy the evidence within the location.”6
Deputy Love testified that based on the information he had received regarding the seizure of cocaine from the pick-up truck, Hoyos’ attempt to get back inside the residence, and his previous experience in searching and securing over 500 residences, he believed there was a strong possibility there were others in the residence who would destroy evidence and pose a danger to the officers’ safety. Deputy Love stated that, in his prior investigations, on at least twenty-five occasions, suspects attempted to or destroyed evidence. He also stated he had been confronted with armed suspects at least five to six times while securing a residence.
Deputy Schelnutt also testified concerning the facts that motivated the decision to enter the house. He stated that based on the large amount of narcotics seized in this investigation and Hoyos’ conduct, he feared that evidence would be destroyed if the officers failed to enter to secure the residence. He also said he had personal knowledge of at least twenty occasions where evidence had been destroyed. Deputy Schelnutt also feared there could be others inside who could be armed and pose a danger to the officers’ safety.
The district court expressly found that the government’s witnesses were credible *1138regarding their testimony in opposition to the motions to suppress. The court also found that Hoyos' testimony was not believable.
We review de novo a district court’s conclusion concerning the validity of a war-rantless protective sweep. United States v. Alfonso, 759 F.2d 728, 741 (9th Cir.1985). The underlying historical facts are reviewed under the clearly erroneous standard. Id.
Officers who have effected an arrest at a residence may conduct a limited search for persons who may destroy evidence or pose a threat to the officers’ safety, if the officers can point to articulable facts that support their belief that others may be on the premises. Id. at 742-43; United States v. Wiga, 662 F.2d 1325, 1330 (9th Cir.1981), cert. denied, 456 U.S. 918, 102 S.Ct. 1775, 72 L.Ed.2d 178 (1982).
The testimony credited by the district court establishes sufficient articulable facts that an entry into the residence was necessary to protect the officers and to avoid the destruction of evidence. During their surveillance of the Starbuck residence, the officers observed four people leave the residence. The initial entry through the front door was not made until Deputy Rodella and Deputy Jameson heard another officer shout from the backyard that suspects were running back inside.7 Prior to the entry, the officers reasonably believed that at least six men were involved in the distribution of cocaine. They knew that Amaya had been arrested and that a large amount of cocaine had been seized. Thus, there were at least five men including Hoyos who were not in custody. They had also observed Hoyos’ white Mazda in the driveway. The officers believed that several persons who had left the residence were aware that the house was under law enforcement surveillance. In addition, any person hidden within could have heard Deputy Love’s shouted commands after Hoyos ran towards the house.
The officers were also aware that over one hundred kilos of cocaine had been seized in connection with Amaya’s arrest at a parking lot. It was logical for them to infer that additional cocaine would be hidden in the residences of his associates in the traffic of narcotics. In a different context, we have upheld a warrant to search a residence based on the logical assumption that “[h]eroin importers commonly have heroin and related paraphernalia where they live.” United States v. Dubrofsky, 581 F.2d 208, 213 (9th Cir.1978). The district court was also free to consider the expert opinion of the officers that persons who distribute large quantities of narcotics are dangerous and will dispose of evidence following the arrest of a confederate.
The facts articulated by the officers justified their entry into the Starbuck residence to look for Hoyos’ associates.8 See United States v. Castillo, 866 F.2d 1071, 1079-81 (9th Cir.1989) (protective sweep held justified where officers had no knowledge of other persons present in apartment, but were aware that the cocaine distribution conspiracy had several members, that cocaine dealers tend to “carry guns *1139and resort to violence,” and that members of this cocaine conspiracy were willing to use violence against law enforcement officers). The fact that no one else was found in the house or that no weapons were located is not dispositive. Our review is limited to facts known to the officers prior to the protective sweep. We “ ‘must be careful not to use hindsight in limiting the ability of police officers to protect themselves as they carry out missions which routinely incorporate danger.’ ” United States v. Astorga-Torres, 682 F.2d 1331, 1335 (9th Cir.1982) (quoting United States v. Coates, 495 F.2d 160, 165 (D.C.Cir.1974)), cert. denied, 459 U.S. 1040, 103 S.Ct. 455, 74 L.Ed.2d 608 (1982) and 459 U.S. 1108, 103 S.Ct. 734, 74 L.Ed.2d 957 (1983).
Hoyos’ contention that the protective sweep exception to the requirement of a search warrant to enter a residence does not apply if the arrest occurs outside is not supported by any authority. This is not surprising because the distinction is logically unsound. If the exigencies to support a protective sweep exist, whether the arrest occurred inside or outside the residence does not affect the reasonableness of the officer’s conduct. A bullet fired at an arresting officer standing outside a window is as deadly as one that is projected from one room to another. The likelihood of the destruction of evidence is the same whether the arrest is indoors or in an outside area within the sight or hearing range of an accomplice within the residence.
In United States v. Jackson, 700 F.2d 181, 189 (5th Cir.) (quoting United States v. Sheikh, 654 F.2d 1057, 1071 (5th Cir.1981), cert. denied, 455 U.S. 991, 102 S.Ct. 1617, 71 L.Ed.2d 852 (1982)), cert. denied, 464 U.S. 842, 104 S.Ct. 139, 78 L.Ed.2d 132 (1983), the Fifth Circuit held that:
‘ “[ajrresting officers have a right to conduct a quick and cursory check of the arrestee’s lodging immediately subsequent to arrest — even if the arrest is near the door but outside the lodging— where they have reasonable grounds to believe that there are other persons present inside who might present a security risk.’ ”
We agree with the Fifth Circuit that the fact that an arrest occurs outside a residence does not invalidate an otherwise lawful protective sweep.
Curiously, in his opening brief, Hoyos cites Wiga in support of his argument that “[t]his circuit’s application of the protective sweep ... doctrine are (sic) limited to those instances where arrests are lawfully made inside a structure.” (emphasis in original). Wiga supports the validity of the protective sweep in this case. In Wiga, the arrest was made outside a motor home. Id. at 1328. The sweep occurred after Moody, whom the officers knew had been inside of the motor home, stepped outside. We held in Wiga that while the “automobile exception” does not apply to the search of the inside of the motor home, id. at 1329, a protective sweep is proper if the officers have “a reasonable suspicion that the motor home housed additional occupants that could impose a threat to the officers’ safety.” Id. at 1331. In Wiga, the officers “could not determine with any certainty whether other occupants aside from Wiga and Moody were present.” Id. (emphasis added). In the matter before us, the officers reasonably believed that there were at least four other persons involved in the narcotics transaction who were not accounted for. Thus, the articulated facts justifying an entry to search for other persons are, if anything, stronger in the instant matter than those before this court in Wiga.
We agree with our dissenting colleague that in Payton v. New York, 445 U.S. 573, 585, 100 S.Ct. 1371, 1379, 63 L.Ed.2d 639 (1979) the Supreme Court reminded us that “ ‘physical entry of the home is the chief evil against which the working of the Fourth Amendment is directed.’ ” (quoting United States v. United States District Court, 407 U.S. 297, 313, 92 S.Ct. 2125, 2134, 32 L.Ed.2d 752 (1972)). In Payton, however, the narrow issue before the Supreme Court was a challenge to “the constitutionality of New York statutes that authorize police officers to enter a private residence without a warrant and with force, if necessary, to make a routine felo*1140ny arrest.” Id. 445 U.S. at 574, 100 S.Ct. at 1374. The court was not faced with the question whether exigent circumstances would justify entry into a home without a warrant of arrest or search. In fact, the Court noted that "it is arguable that the warrantless entry to effect Payton’s arrest might have been justified by exigent cir-cumstances_” Id. at 583, 100 S.Ct. at 1378. The Court stated that this justification for an entry to make an arrest without a warrant was not before it because “none of the New York courts relied on any such justification.” Id. In the matter before us, the district court did rely on exigent circumstances to justify the protective sweep. Thus, unlike the posture of the case before the Supreme Court in Payton, the issue is squarely before us. The court in Payton recognized that while “searches and seizures inside a home without a warrant are presumptively unreasonable[,]” id. at 586, 100 S.Ct. at 1380, an entry to make a search or seizure within a suspect’s premises is reasonable if “the police can show that it falls within one of a carefully defined set of exceptions based on the presence of ‘exigent circumstances.’” Id. at 586 n. 25, 100 S.Ct. at 1380 n. 25.
A protective sweep inside a suspect’s premises has been defined in this circuit as an exception to the Fourth Amendment’s warrant requirement to prevent physical harm or the destruction of evidence. Alfonso, 759 F.2d at 741-43. The dissent suggests that if we permit officers to enter a home to make a protective sweep when the arrest occurs outside we will increase .the danger to police because “[i]f police readily may enter a house after an arrest outside, occupants may be more likely to use force to ward off intrusion.” Dissent at 1143. There is no factual basis for this speculation. Our duty is to determine, on a case by case basis, whether the record shows that officers were aware of articula-ble facts that justified an entry without a warrant. Wiga, 662 F.2d at 1330. Such facts existed in this case.
The dissent also speculates that the majority’s conclusion that a protective sweep was justified under the unique facts articulated by the officers in this case, would result in a decision in some future case that “any arrest within gunshot range of a house may itself generate exigent circumstances justifying entry.” Dissent at page 1143. Nothing stated in this opinion would support this supposition. It should be noted initially that the dissent does not define “gunshot range.” Hoyos was arrested as he was pulling open the screen door. Thus, the arresting officers were within a few inches of persons who might be hiding with drawn weapons on the other side of the door. It seems evident that an officer’s life is threatened at this distance even if his hidden assailant is a poor or inexperienced marksman.
If ever a case is presented to this court wherein a protective sweep is upheld by the district court solely because the officer’s were within “gunshot range of a house,” but not immediately outside a door at point blank range, we will have the duty to decide that matter on the totality of the circumstances presented therein. We are confident that in the hypothetical case suggested by the dissent, the obvious distinction between the danger posed by a weapon that may be fired at an officer from a distance of a few inches as opposed to the more remote threat of harm where an arrest is made at the outer limits of “gunshot range” will be fully litigated by the opposing parties.
The dissent cites Vale v. Louisiana, 399 U.S. 30, 33-4, 90 S.Ct. 1969, 1971-2, 26 L.Ed.2d 409 (1970), for the proposition that the Supreme Court “originally limited protective sweeps quite narrowly”. Dissent at 1143. Vale contains no limitation on protective sweeps. In Vale, the prosecution did not attempt to justify the warrantless entry as a protective sweep. Instead, the state of Louisiana argued that the search of the house for physical evidence was justified as an incident to a lawful arrest that occurred outside. Id. at 33, 90 S.Ct. at 1971. Relying on Chimel v. California, 395 U.S. 752, 89 S.Ct. 2034, 23 L.Ed.2d 685 (1969), the Supreme Court in Vale concluded that the search of a rear bedroom for narcotics was not substantially contemporaneous or within the immediate vicinity of the arrest of a person outside the house. Id. 399 U.S. at 33, 90 S.Ct. at 1971.
*1141In Vale, the Supreme Court rejected the Louisiana Supreme Court’s conclusion that the search was “independently supportable because it involved narcotics, which are easily removed, hidden, or destroyed[,]” because the record showed that “the arresting officers satisfied themselves that no one else was in the house when they first entered the premises.” 399 U.S. at 34, 90 S.Ct. at 1972. The Court noted that the State had failed to present evidence to show the existence of an “exceptional situation” justifying a search without a warrant. Id. Thus, Vale can be read as some indication that an entry to prevent the destruction of evidence after an arrest outside would be proper if the prosecution meets its burden “to show of the existence of such an exceptional situation.” Id.
The protective sweep issue has not yet been presented for decision to the Supreme Court in any case. For that reason, the Court has not been called upon to consider the merits of the rule adopted in this circuit permitting an entry if articulable facts justify a search for persons within a building. As noted above, however, in Payton, the Supreme Court stated that it was “arguable” the entry might have been justified by “exigent circumstances” and in Vale the Court rejected justification of an entry to avoid destruction of evidence because the record did not support the presence of “exceptional circumstances.” We do not think the court’s observations in Payton and Vale can fairly be construed as a disapproval of the law of this circuit. In short, contrary to the view expressed in the dissent, the Supreme Court’s comments in Vale and Payton concerning exigent or exceptional circumstances would appear to support our decisions in Wiga and Alfonso.
Based on all the facts known to the investigating and arresting officers, the protective sweep of the residence was fully justified.
III.
VALIDITY OF THE SEARCH WARRANT
Hoyos contends that the search warrant was invalid because it was issued based on evidence observed during an unlawful warrantless entry into the Starbuck residence. As explained above, Hoyos’ arrest and the initial entry into the house were lawful. Accordingly, the evidence observed in plain view during the protective sweep of the house was properly used to support the issuance of a search warrant.
IV.
THE MOTION TO WITHDRAW THE GUILTY PLEA
Hoyos argues that the district court erred in denying his motion to withdraw his guilty plea. He contends that this motion should be freely granted because it was made prior to sentencing. He also argues that he was upset at the time that he entered his guilty plea and was not thinking clearly. He asserts that his meeting with his attorney regarding the plea was only 30 minutes long. He claims that his attorney advised him to admit things just to get the plea accepted. Finally, he contends his attorney failed to advise him fully on whether certain evidence would be admissible against him.
We review a district court’s decision to grant or deny a motion to withdraw a guilty plea for abuse of discretion. United States v. Read, 778 F.2d 1437, 1440 (9th Cir.1985), cert. denied, 479 U.S. 835, 107 S.Ct. 131, 93 L.Ed.2d 75 (1986); United States v. Castello, 724 F.2d 813, 814 (9th Cir.), cert. denied, 467 U.S. 1254, 104 S.Ct. 3540, 82 L.Ed.2d 844 (1984). We have previously held that trial judges should freely allow withdrawal of a guilty plea prior to sentencing. Read, 778 F.2d at 1440. A guilty plea after sentencing will not be set aside unless a manifest injustice would result. United States v. Baker, 790 F.2d 1437, 1438 (9th Cir.1986). An attempt to withdraw a guilty plea before sentencing, but after a co-defendant has been sentenced “is akin to that of a defendant who seeks to withdraw his plea after sentencing.” United States v. Kay, 537 F.2d 1077, 1078 (9th Cir.1976) (per curiam).
*1142The district court did not abuse its discretion in refusing to grant Hoyos’ motion to withdraw his guilty plea. Hoyos submitted a declaration in support of his motion to withdraw his plea of guilty in which he alleged that he was upset and tearful during his discussion with the court. Hoyos testified at the hearing on this motion. At the conclusion of these proceedings, the court expressly found that Hoyos was not a truthful person and discredited his testimony. The court also found that at the time of the entry of his plea Hoyos appeared to be “calm and not tearful.”
Hoyos stated at the time of his plea that his attorney had fully informed him of his rights, that he had had adequate time to meet and discuss the plea, and that no one had told him how to answer the questions or to admit anything he had not done. Luis De La Cruz, Hoyos’ attorney at the time the guilty plea was taken, testified at the hearing on the motion to withdraw. De La Cruz testified that during a discussion with Hoyos on Wednesday, November 25, 1986, he fully informed Hoyos of all of his rights, including the existence of evidence that could or could not be presented against him and the maximum sentence he could receive. He stated that he told Hoyos that if he pled guilty he should answer all of the court’s questions truthfully. In addition, he told Hoyos that he had until the end of that week to decide whether to change his plea to guilty.
The trial judge was entitled to credit Hoyos’ testimony at the time he entered the plea and to disbelieve the allegations in the affidavit in support of the motion to withdraw the guilty plea. Castello, 724 F.2d at 815. Finally, the motion for withdrawal of the plea was filed after Hoyos had learned that one of his co-defendants, who pleaded guilty, had been sentenced to 10 years and another, who had gone to trial, had been found not guilty. Hoyos failed to present evidence establishing that manifest injustice would result if he was not allowed to withdraw his guilty plea. The district court did not abuse its discretion in denying Hoyos’ motion to withdraw his guilty plea.
AFFIRMED.
. Deputy Mulligan has been assigned to narcotics investigations for three years. He has taken part in several hundred investigations.
. Special Agent Ingleby is assigned to investigate violations of United States currency and narcotics laws. Prior to this case, he had been involved in approximately 50 narcotics investigations.
. Sergeant Stover has been a member of the Sheriff’s Office for 27 years and has been assigned to narcotics investigations for nine years. He participated in approximately 500 narcotics investigations.
. Deputy Schelnutt has worked for the Los An-geles County Sheriffs Office for over 19 years. He has spent over seven years with the narcotics unit and has participated in several hundred narcotics investigations.
. Deputy Love has worked for the Sheriffs Department since 1969. He has been with the narcotics unit since 1976 and has also participated in hundreds of narcotics investigations. Deputy Rodella has been with the department for nine years. He had been working with the narcotics unit for nine months at the time of the arrest. He has participated in executing search warrants and securing residences over 100 times.
. The dissent contends that Deputy Rodella’s negative response to defense counsel’s question, ”[d]id you have any indication that there were other people inside?" showed that the officers “could not sustain a reasonable belief that others might be in the house — much less with a mind to destroy evidence or jeopardize the officer's safety." Dissent at p. 1144. The dissent, however, ignores the balance of that colloquy, as set forth above, in which Deputy Rodella articulated the facts which led him to believe that there might be others in the house that could pose a threat to the officers or destroy evidence.
. The dissent states that the fact that Hoyos was running towards the house is irrelevant. Dissent at 1143-1144. According to the dissent, "[t]he inference from Hoyos’s run for the door is that he was trying to escape, not that others were in the bouse." Id. Clearly, this is not the only possible inference that could be drawn from Hoyo’s conduct. It was also reasonable for the officers to infer that Hoyos was trying to warn others inside or to escape to a place where he knew there were others who could rescue him.
. The dissent cites United States v. Whitten, 706 F.2d 1000, 1016 (9th Cir.1983), as an example of a case where we held "that circumstances similar to those in this case did not amount to exigent circumstances.” Dissent at 1144 (emphasis in original). In Whitten, there was no evidence that the officers had articulable facts on which to base a reasonable belief that someone other than the defendant might be present in the defendant’s room. 706 F.2d at 1016. The defendant was handcuffed immediately upon arrest and there was no testimony that the officers suspected that anyone associated with the defendant might be in the vicinity. Id. Unlike, Whitten, in this case Hoyos attempted to escape arrest by entering the house. In addition, the officers testified that they were aware that several suspects had not yet been arrested and could possibly be in the area of the Starbuck residence.