Appellee was charged with possession and possession with intent to deliver a controlled substance,1 and criminal con*4spiracy.2 This is a Commonwealth appeal from the lower court’s order granting a request for suppression made by appellee and a co-defendant.3 The Commonwealth seeks to justify the search of appellee on two theories: (1) the police had probable cause to conduct the search; and (2) the police had probable cause to arrest, thereby validating the search incident thereto. We find the lower court’s order in error, and therefore reverse.
The facts material to our disposition are as follows. On October 8,1976, at approximately 10:30 p. m., Officer James Holliday of the Pittsburgh Police received a telephone call from a confidential informant who stated that there were three individuals standing in front of Anita's Bar, located in the 2200 block of Centre Avenue. The informant described the individuals as one Black male who was wearing a red jacket and glasses, another Black male, approximately six feet tall, who was wearing a brown jacket and gray slacks, and a Black female, who was heavy set and was wearing a green slacks suit. The informant said he was in the area and had observed the trio engage in drug sales. He also said the activity was taking place at the time of the call. Officer Holliday and his partner, both plain clothes officers, proceeded to the area. They observed three individuals matching the descriptions given by the informant. A twenty to twenty-five minute surveillance was conducted, during which the officers observed what appeared to be two drug passes. As the police car proceeded to pass the three a second time, the trio began walking away. The officers followed, and with the help of a back-up unit, subsequently stopped the trio and took them into custody. When appellee was searched at the Public Safety Building, sixteen and one-half spoons of heroin were found on her person.
*5The lower court found that the informant’s reliability was not sufficiently established and that there was no probable cause based upon the informant’s tip and the police surveillance. Thus, the court held that the arrest without a warrant was illegal, as was the search incident thereto.
It is axiomatic that all arrests and searches, whether with or without a warrant, must be based upon probable cause. The standard for determining probable cause is the same for both arrests and searches. Commonwealth v. Milliken, 450 Pa. 310, 300 A.2d 78 (1973); Commonwealth v. Harmes, 255 Pa.Super. 147, 386 A.2d 551 (1978). In Commonwealth v. Jackson, 459 Pa. 669, 673-74, 331 A.2d 189, 191 (1975), our supreme court stated that:
“In determining the presence of probable cause ‘[t]he crucial test is whether there were facts available at the time of the initial apprehension which would justify a man of reasonable caution in the belief that a crime had been committed and that the individual arrested was the probable perpetrator.’ Commonwealth v. Jones, [457 Pa. 423,] 322 A.2d [119,] at 123 (citations omitted).”
In Aguilar v. Texas, 378 U.S. 108, 84 S.Ct. 1509, 12 L.Ed.2d 723 (1964), the Supreme Court enunciated the standard for determining the sufficiency of probable cause supporting a search when an informant’s tip has been relied upon by the searching officer. The court therein established that the officer must know the underlying circumstances from which the informant concluded that the suspect was guilty of a crime, and the officer must have some reason to believe that the informant is telling the truth. The first part of the test is satisfied when the informant reveals to the officer the manner in which he obtained his information or describes the criminal activity in detail. By establishing the informant’s past reliability, the second requirement is met. Commonwealth v. Samuels, 235 Pa.Super. 192, 340 A.2d 880 (1975); Commonwealth v. Soychak, 221 Pa.Super. 458, 289 A.2d 119 (1972).
*6Appellee argues that neither of the two requirements were satisfied in this case. To the contrary, we find that both criteria were met. The informant told Officer Holliday that he observed the heroin sales engaged in by the three individuals at the time of his telephone call. He described the location of the trio and gave detailed descriptions of the individuals. When Holliday arrived at the designated location, he saw three persons who fit the descriptions exactly.
As for the informant’s reliability, it is true that general conclusions concerning trustworthiness are not sufficient. Commonwealth v. Hall, 451 Pa. 201, 302 A.2d 342 (1973). Some factual circumstances must be set forth to evidence the informant’s reliability.
In Commonwealth v. Bailey, 460 Pa. 498, 333 A.2d 883 (1975), relied upon by appellee, the supreme court held that the informant’s reliability was not adequately established. There, the police could not state how many arrests ever resulted or whether there were any convictions obtained as the result of past information supplied by the informant. The instant case is in marked contrast. Here, the officer named three individuals who were arrested and who were ultimately convicted, although the convictions occurred after appellee’s arrest. In addition, Officer Holliday testified to another drug arrest, which also ultimately resulted in a conviction, although he could not recall the individual’s name. Finally, the officer testified that there were other individuals, in addition to those named, who were arrested and convicted on tips supplied by this informant. Appellee makes much of the fact that the three named prior arrests did not result in convictions until after appellee’s arrest. Our research, however, uncovers no case which holds that an informant must have provided information in the past that led to arrests and convictions. Nor do we find a requirement that any given number of arrests and convictions is necessary. Rather, in Commonwealth v. Archer, 238 Pa.Super. 103, 109, 352 A.2d 483, 486 (1975), we said:
“While past reliability is most often established through a showing of convictions which resulted from information *7supplied by the informer, e. g., Commonwealth v. Williams, 236 Pa.Super. 184, 345 A.2d 267 (1975); Commonwealth v. Ambers, [225 Pa.Super. 381, 310 A.2d 347 (1973)], there is no logical reason for mandating that all information lead to convictions before reliability is established.”
We therefore found that past “investigative leads” that proved reliable and accurate were a sufficient indicator of the informant’s reliability. See also, Commonwealth v. Pamela Ann Hunt, 256 Pa.Super. 140, 389 A.2d 640 (1978). The essential fact is that the informant gave prior information implicating other persons in criminal activity, which information proved to be correct. We find that the informant’s reliability was adequately established in this case.
This case bears a resemblance to Commonwealth v. Altizer, 213 Pa.Super. 201, 245 A.2d 692, aff’d, 436 Pa. 611, 260 A.2d 469 (1968). There, a police officer was approached by an unidentified informant who stated that he had been in a certain nearby bar, wherein another patron offered to sell him postal money orders. The informant gave a complete description of the man, and when the officer entered the bar he located a person who fit exactly the informant’s description. The officer also observed the top of a package protruding from the defendant’s pocket, which he assumed were money orders. The officer testified that, “ ‘There was no time to get a warrant or anything and I felt that maybe a felony had been committed. I approached him and took them out of his pocket.’ ” Commonwealth v. Altizer, supra at 203, 245 A.2d at 693. The defendant was then handcuffed and taken to police headquarters. In determining whether there were sufficient corroborating circumstances necessary to justify the police officer’s reliance on information from an unidentified source, the court relied upon Commonwealth v. Bosurgi, 411 Pa. 56, 190 A.2d 304, cert. denied, 375 U.S. 910, 84 S.Ct. 204, 11 L.Ed.2d 149 (1963). The Altizer court concluded that there were sufficient circumstances to justify police reliance on the informant’s tip: (1) the fact that the person searched fit exactly the description provided by the informant, and (2) the fact that the officer was able to personally observe the money orders.
*8The court went on to ask whether, at the time of the search, sufficient knowledge was available to the officer to establish probable cause. (In the instant case, we are concerned with whether there was sufficient knowledge to establish probable cause at the time of the arrest, since the contraband was not uncovered until the search was conducted subsequently at the Public Safety Building.) The Altizer court applied the probable cause standard, requiring “evidence which would lead a man of reasonable caution to believe that a felony had been committed.” The court found the officer’s conclusion, that the large number of money orders must have indicated that they were stolen, to be supported by other circumstances, the informant’s tip, the context of the taproom, and the neighborhood. The Altizer court thus upheld admission of the money orders into evidence against the defendant.
In the instant ease, the informant was known to the police officer, unlike in Altizer. But even if the informant had been unidentified, there would have been sufficient corroborating circumstances to justify the police officer’s reliance on the tip. First, the three individuals matched exactly the description supplied by the informant and were at the location specified, and second, the officers were able to observe what they concluded were two drug transactions in which the trio was involved. Finally applying the test for probable cause — was there “evidence which would lead a man of reasonable caution to believe that a felony had been committed” — we conclude that there was. The police observed three persons standing in front of a bar, well known for the drug traffic that had occurred there in the recent past, and saw two other individuals separately approach the group and make some exchange with one of the three. The lower court noted, however, that the officers did not observe any suspicious movement or activity on the part of appellee, herself, during the surveillance.
Although appellee was not personally engaging in the drug passes observed by the officers in this case, there was more than mere presence and police speculation upon which *9to base a finding of probable cause to support her arrest. The informant reported that three individuals, including appellee, were involved in drug sales. When the officers arrived at the scene they saw appellee standing between the two males involved. When two individuals approached the group to engage in the alleged sales witnessed by the police, the trio carried on conversations with the purchasers. Appellee remained a part of the trio for the duration of the police surveillance, twenty to twenty-five minutes. She then departed with her two companions, and the three were still together when they apprehended several blocks away. The police could have reasonably concluded that the three individuals were joint participants in the criminal activity that was taking place, and that appellee was, at the very least, a co-conspirator in the delivery of the drugs.
Therefore, on the basis of the information supplied by the informant, combined with the independent surveillance of the officers and their knowledge of the area and the bar itself, we conclude that there was probable cause for the arrest, and thus the fruits derived from the subsequent search were legally obtained and are admissible against appellee.
The order of the court below is reversed and the case is remanded for further proceedings.
JACOBS, President Judge, files a dissenting opinion in which SPAETH, J., joins. WATKINS, former President Judge, and HOFFMAN, J., did not participate in the consideration or decision of this case.. The Act of April 14, 1972, P.L. 233, No. 64, § 13(a)(30) [35 P.S. § 780-113(a)(30)].
. 18 Pa.C.S. § 903.
. The suppression order encompassed all drugs found on the person of appellee in a search conducted subsequent to her arrest. Because the • Commonwealth is “substantially handicapped”. by the lower court’s order, this appeal is properly before üs. Commonwealth v. Bosurgi, 411 Pa. 56, 190 A.2d 304, cert. denied, 375 U.S. 910, 84 S.Ct. 204, 11 L.Ed.2d 149 (1963).