Ricardo Villegas was indicted on one count of illegal re-entry into the United States after having been deported previously on account of two aggravated felony convictions, see 8 U.S.C. § 1326(b)(2), and one count of intentional possession of marijuana, see 21 U.S.C. § 844. Mr. Villegas moved to suppress evidence of his identity as the product of an unlawful arrest and detention. A hearing was held before a magistrate judge who recommended denial of Mr. Villegas’ motion. When Mr. Ville-gas objected to the magistrate judge’s recommendation, the district court reviewed Mr. Villegas’ motion de novo at a combined hearing on that motion and bench trial. The district court denied the motion and found Mr. Villegas guilty on both counts. Mr. Villegas now appeals the district court’s denial of his motion to suppress. For the reasons set forth in this opinion, we believe that the district court correctly determined that Mr. Villegas’ arrest did not violate the Fourth Amendment and therefore committed no error in admitting the evidence. Accordingly, we affirm the judgment of the district court.
I
BACKGROUND
A.
Officers Thomas Obergon and Michael Lutz were both assigned to the Milwaukee Police Department’s (“MPD”) Gang Squad and knew Mr. Villegas and Ephraim Munoz to be members of the Mexican Posse. They also knew that Munoz was wanted in connection with a homicide. In addition, as part of his regular investigation of gang members, Officer Obergon had learned from the United States Department of Homeland Security (“DHS”) that Mr. Vil-legas had been deported previously on account of his status as an aggravated felon. Officer Obergon also had run Mr. Villegas’ name through the National Crime Infor*764mation Center (“NCIC”), and had received confirmation of Officer Obergon’s information. The NCIC report also noted that Mr. Villegas was wanted by the Bureau of Immigration and Customs Enforcement (“ICE”) through an apprehension request to local law enforcement.
On August 20, 2004, Officers Obergon and Lutz received a call from an off-duty MPD officer, informing them that Munoz and Mr. Villegas had been seen drinking beer outside of a building at 4955/4957 South 14th Street. That building was a two-story duplex owned by Mr. Villegas’ sister, Maria Ventura. One unit of the duplex was situated on the first floor; another unit occupied the second floor. Mr. Villegas and his sister lived in the first floor unit.
The second floor unit was occupied by May and John Franklin. The Franklins had lived in that unit for twenty-three years and were unrelated to Ventura and Mr. Villegas. May Franklin ran a small business from her home, selling dolls, crafts, men’s clothing and other assorted items. She advertised the business by a sign in front of the duplex, which listed a phone number and invited prospective customers to call for an appointment.
The duplex had two entrances. These entrances were adjacent to one another on the southeast corner of the building: one on the eastern corner of the building’s southern exposure and one on the southern corner of the building’s eastern exposure. Each entrance had a solid wood inner door and an outer screen door. The entrances led into a small common hallway that provided access to the first floor unit where Mr. Villegas and his sister lived, a staircase leading to the Franklins’ second floor unit and a staircase leading down to a basement. Each unit was closed to the common hallway.
When Officers Obergon and Lutz learned that Munoz and Mr. Villegas had been seen outside the duplex, they, along with other MPD officers, proceeded to the area and assembled at a location near the duplex. At some point, Officer Obergon told Officer Lutz that Mr. Villegas was a previously deported aggravated felon and that ICE had issued an apprehension request. Officer Obergon then left the assembly point in an unmarked police car to confirm that Munoz and Mr. Villegas were indeed outside 4955/4957 South 14th Street. When Officer Obergon passed the address, he saw Munoz and Mr. Villegas outside the home drinking beer. He recognized both men on sight from his prior investigations. Officer Obergon notified the other MPD officers that Munoz and Mr. Villegas were outside the duplex and, in order to avoid detection, proceeded down the street to park his vehicle.
When Officer Lutz and the other MPD officers reached the duplex, neither Munoz nor Mr. Villegas was outside. The officers surrounded the building, and Officer Lutz took up a position near one of the entrances. When Officer Lutz arrived at the entrance, the inner doors of both entrances were open and the screen doors, while closed, were unlocked. Officer Lutz heard another officer shout that somebody had tried to exit the building through a window, but had reentered the building. Officer Lutz then entered the common hallway.
As Officer Lutz entered the common hallway, Mr. Villegas exited the first floor unit into the common hallway. Officer Lutz recognized Mr. Villegas on sight based on a picture the officer had seen of Mr. Villegas earlier that day. Officer Lutz identified himself as a police officer, addressed Mr. Villegas by name and told Mr. Villegas that he was under arrest. While outside the first floor unit and upon hearing Officer Lutz, Mr. Villegas dropped a small clear bag whose contents, upon visu*765al inspection, Officer Lutz suspected to be marijuana. Officer Lutz again told Mr. Villegas that he was under arrest and reached for the defendant’s arm. Mr. Vil-legas resisted, shoving Officer Lutz into a wall or the doorway to the unit, and attempted to reenter the first floor unit. Officer Lutz called for assistance and was joined by a second MPD officer. Mr. Vil-legas continued to resist arrest and the three men, Mr. Villegas, Officer Lutz and the second MPD officer, fell into the first floor unit. At some point in the struggle, Mr. Villegas wrestled free of Officer Lutz and kicked him in his midsection. When the officers finally were able to place Mr. Villegas in handcuffs, he continued to resist the officers, spitting blood and mucus at them, some of which landed on Officer Lutz’s arm.
After the arrest, Mr. Villegas was taken to the Milwaukee County jail. His booking in the Milwaukee County jail caused a notice to be sent to ICE Special Agent Ronald Rickey. About a month earlier, Agent Rickey had received information that Mr. Villegas had reentered the United States and might be in the Wisconsin area. Upon receiving this information, Agent Rickey had ordered Mr. Villegas’ alien registration file, or “A file,” which included a fingerprint card and a picture of Mr. Villegas. Agent Rickey then matched the fingerprints in the A file to fingerprints taken by the MPD after a prior arrest of Mr. Villegas.
As a result of the notice received following Mr. Villegas' August 20, 2004 arrest, Agent Rickey went to the Milwaukee County jail on August 23, 2004 to interview Mr. Villegas. Upon his arrival, Agent Rickey recognized Mr. Villegas from the photograph in Ms A file. Although Mr. Villegas had been booked under the name Douglas Enrique Villegas, one of Mr. Ville-gas’ known aliases, he responded to Agent Rickey when the agent addressed him as Ricardo. Agent Rickey then read Mr. Vil-legas his Miranda rights, which Mr. Ville-gas acknowledged. Mr. Villegas declined the presence of counsel. Agent Rickey then proceeded to interview Mr. Villegas about his background. The answers that he provided were consistent with the information in his A file. The interview lasted about fifteen minutes and ended when Mr. Villegas stated that he did not wish to answer any further questions.
B.
Mr. Villegas was charged in a two-count indictment. The first count charged him with illegal reentry into the United States in violation of 8 U.S.C. § 1326(b)(2);1 the *766second count charged him with the knowing and intentional possession of marijuana in violation of 21 U.S.C. § 844. The latter charge was based on the marijuana found in the bag dropped by Mr. Villegas at the time of his arrest.
Mr. Villegas moved to suppress, as the fruits of an unlawful seizure, both the statements about his identity that he had made to Agent Rickey after his arrest and the marijuana that had been found at the time of his arrest. He contended that his Fourth Amendment right, made applicable to the states by the Fourteenth Amendment, to be free from unreasonable searches and seizures had been violated when Officer Lutz entered the common hallway of the duplex without a search warrant. The district court referred the motion to a magistrate judge who recommended that the motion be denied because Officer Lutz’s entry into the duplex fell within the exigent circumstances exception to the Fourth Amendment’s warrant requirement.
Mr. Villegas filed an objection to the magistrate judge’s recommendation. The district court then held a joint hearing at which it conducted both a de novo hearing on Mr. Villegas’ suppression motion and a bench trial. At the conclusion of this proceeding, the district court denied Mr. Ville-gas’ motion to suppress. The court concluded that, because Mr. Villegas had no legitimate expectation of privacy in the common hallway, Officer Lutz’s entrance into the common hallway without a warrant had not violated Mr. Villegas’ Fourth Amendment rights. The district court further noted that it did not believe that, under INS v. Lopez-Mendoza, 468 U.S. 1032, 104 S.Ct. 3479, 82 L.Ed.2d 778 (1984), the Fourth Amendment’s exclusionary rule would require release of Mr. Ville-gas after his identity had been established by fingerprints or other records. The district court then found Mr. Villegas guilty on both counts of the indictment.2
Mr. Villegas now appeals the decision of the district court denying his motion to suppress his statements to Agent Rickey as the fruit of an unlawful seizure.
II
DISCUSSION
In reviewing the district court’s decision with respect to a motion to suppress, we review the district court’s findings of fact for clear error and its legal determinations de novo. United States v. Yang, 478 F.3d 832, 835 (7th Cir.2007).
Mr. Villegas contends that Officer Lutz’s entry into the common area of the duplex without a warrant violated the Fourth Amendment’s prohibition against warrant-less searches and seizures. He submits that, but for the unlawful entry and subsequent arrest, the Government would have had no evidence of his identity and that, without that evidence, it would not have been possible to convict him for unlawful reentry into the United States. The Government offers in reply three separate grounds that, in its view, support the decision of the district court. First, the Government contends that Mr. Villegas had no legitimate expectation of privacy in the common area of the duplex; therefore, Officer Lutz’s warrantless entry into that area did not violate the Fourth Amendment. Next, the Government submits that, even if Officer Lutz’s entry into the common area of the duplex violated Mr. Villegas’ Fourth Amendment rights, the arrest and subsequent detention of Mr. *767Villegas were not unlawful because the arrest was supported by probable cause. Because there was probable cause for the arrest, the Government continues, any statements made by Mr. Villegas outside of the duplex in the course of his detention do not fall within the Fourth Amendment’s exclusionary rule. Lastly, the Government submits that, even if Officer Lutz violated Mr. Villegas’ Fourth Amendment rights and there was no probable cause to support his arrest and continued detention, evidence pertaining to Mr. Villegas’ identity does not fall within the Fourth Amendment’s exclusionary rule.
We shall address the first two of the Government’s contentions. However, because we conclude that, under the circumstances, Officer Lutz’s warrantless entry into the duplex’s common areas did not violate Mr. Villegas’ Fourth Amendment rights, and that, in any event, Mr. Villegas’ continued detention was lawful because it was supported by probable cause, we need not address the Government’s contention that identity evidence does not fall within the strictures of the Fourth Amendment’s exclusionary rule.
A. Officer Lutz’s Warrantless Entry into the Duplex
The Fourth Amendment protects against warrantless intrusions by the government into areas in which that individual holds a reasonable expectation of privacy. Yang, 478 F.3d at 835. The district court determined that, because Mr. Villegas had no legitimate expectation of privacy in the duplex’s common hallway, Officer Lutz’s warrantless entry into that area did not violate the Fourth Amendment.
A defendant seeking to suppress the fruits of a search bears the burden of demonstrating both that he held an actual subjective expectation of privacy and that the expectation “is one that society is prepared to recognize as reasonable.” Id. In determining whether a defendant held a subjective expectation of privacy, we look at the defendant’s efforts to conceal and keep private that which was the subject of the search. Id. To say that society is prepared to recognize an expectation of privacy as reasonable “recognizes the everyday expectations of privacy that we all share.” Minnesota v. Olson, 495 U.S. 91, 98, 110 S.Ct. 1684, 109 L.Ed.2d 85 (1990). Thus, our inquiry into whether a defendant’s expectation of privacy was reasonable is necessarily fact dependent, see United States v. Smith, 978 F.2d 171, 180 (5th Cir.1992), and “whether a legitimate expectation of privacy exists in a particular place or thing” must be determined on a case-by-case basis, United States v. Waller, 426 F.3d 838, 844 (6th Cir.2005).
Mr. Villegas has not demonstrated a subjective expectation of privacy with respect to the common hallway. Nor has he shown that any subjectively held expectation of privacy that he might hold with respect to that hallway is one that society is prepared to recognize as reasonable. Although Ventura testified that the solid outer doors leading to the common hallway normally were kept closed and locked, on the day in question, those doors were open. Indeed, Officer Lutz testified that he could see into the common hallway through a screen door, which itself was unlocked. Exposing the activities within the common hallway to the world is inconsistent with a subjective expectation of privacy, particularly when the other occupants of the duplex, the Franklins, ran a business from the property that was advertised by a sign in front of the building.
Even if Mr. Villegas held a subjective expectation of privacy with respect to the common hallway, the facts of this case and our precedents reveal that such an expectation would not be “one that society is prepared to recognize as reasonable.” Yang, 478 F.3d at 835. First, the common *768hallway was the sole regular access to both units in the duplex. Anyone desiring access to the Franklins’ home, including the Franklins’ customers and, indeed, the Franklins themselves, had to pass through that hallway to reach the Franklins’ unit. See United States v. Espinoza, 256 F.3d 718, 723 (7th Cir.2001) (noting that tenants in multifamily housing buildings lack a reasonable expectation of privacy in common areas of the buildings); United States v. Concepcion, 942 F.2d 1170, 1172 (7th Cir.1991) (holding that the defendant had no reasonable expectation that his activities in an apartment building’s common entrance would remain his secret). Nor did Mr. Villegas present any evidence that suggests that he and his sister were related to the Franklins, such that the duplex in its entirety should be considered a single dwelling; indeed, the evidence of record supports the opposite conclusion. But cf. United States v. King, 227 F.3d 732, 749-50 (6th Cir.2000) (finding a reasonable expectation of privacy in a common basement accessible only by invitees of a duplex’s tenants and where all of the tenants were family members). We have held previously that circumstances such as the one detailed in this record are inconsistent with a legitimate expectation of privacy. See Concepcion, 942 F.2d at 1172 (holding that tenants have no reasonable expectation of privacy in the common areas of an apartment building); see also Espinoza, 256 F.3d at 723 (noting “considerable tension” between a district court’s ruling applying the knock and announce rule of Wilson v. Arkansas, 514 U.S. 927, 115 S.Ct. 1914, 131 L.Ed.2d 976 (1995), to the common area of a duplex and our prior holdings that tenants in multi-family housing units lack a legitimate expectation of privacy in common areas in which landlords and co-tenants may admit freely outsiders).
Mr. Villegas points to a number of cases from other courts of appeals holding that the defendant had a legitimate expectation of privacy in a common area of a duplex or other small multi-family dwelling.3 We be*769lieve that these cases simply emphasize the fact-dependent nature of the inquiry into the reasonableness of an individual’s expectation of privacy in a particular place. Under the facts of this case, Mr. Villegas clearly had no legitimate expectation of privacy in the common hallway of the duplex.
B. Probable Cause for Arrest
The Government further contends that, even if we assume, arguendo, that Mr. Villegas was seized in an area in which he had a legitimate expectation of privacy, evidence of Mr. Villegas’ identity obtained in the course of his detention following his arrest and as a result of his statements to Agent Rickey does not fall within the Fourth Amendment’s exclusionary rule because there was probable cause for his arrest.
The exclusionary rule vindicates an individual’s entitlement to shield his person, house, papers and effects, from the Government’s scrutiny until a valid warrant has issued. Hudson v. Michigan, — U.S. -, 126 S.Ct. 2159, 2165, 165 L.Ed.2d 56 (2006). However, because the exclusionary rule visits penalties upon the Government, and hence the public at large, on account of an officer’s violation of the law, application of the exclusionary rule “must bear some relation to the purposes which the law is to serve.” New York v. Harris, 495 U.S. 14, 17, 110 S.Ct. 1640, 109 L.Ed.2d 13 (1990) (quoting United States v. Ceccolini, 435 U.S. 268, 279, 98 S.Ct. 1054, 55 L.Ed.2d 268 (1978)) (internal quotation marks omitted). The rule of Payton v. New York, 445 U.S. 573, 100 S.Ct. 1371, 63 L.Ed.2d 639 (1980), which prohibits the warrantless, nonconsensual entry into an individual’s home to make an arrest, is “designed to protect the physical integrity of the home.” Harris, 495 U.S. at 17, 110 S.Ct. 1640. Because it is the absence of probable cause, not the absence of a warrant, that renders unlawful the custody of an individual by the Government, continued detention of a suspect following an arrest inside his home, but supported by probable cause, is not rendered unlawful by the absence of a warrant. Id. at 18-19, 110 S.Ct. 1640. Therefore, the Supreme Court held in New York v. Harris, 495 U.S. 14, 110 S.Ct. 1640, 109 L.Ed.2d 13 (1990), that the exclusionary rule does not apply to statements made by a defendant while in custody outside of the home when the police have probable cause to arrest *770the suspect, even though the arrest itself may violate Payton. Id. at 21, 110 S.Ct. 1640.
Probable cause exists when, at the time of arrest, the arresting officer possesses “knowledge from reasonably trustworthy information that is sufficient to warrant a prudent person in believing that a suspect has committed, or is committing a crime.” United States v. Breit, 429 F.3d 725, 728 (7th Cir.2005). Whether a police officer acted on probable cause is determined “based on the common-sense interpretations of reasonable police officers as to the totality of the circumstances at the time of arrest.” Id.
At the time of the arrest, Officer Lutz had probable cause to arrest Mr. Villegas for violation of 8 U.S.C. § 1326(a) and (b). An individual violates § 1326(a) when, after having been deported previously, he is found in the United States without first having obtained the consent of the Attorney General to apply for readmission before reembarking for the United States. 8 U.S.C. § 1326(a). On the day of Mr. Ville-gas’ arrest and prior to the arrest, Officer Lutz had been told by Officer Obergon that there was an immigration apprehension request for Mr. Villegas’ arrest because he had reentered the United States illegally after having been deported previously as an aggravated felon. Officer Ob-ergon also had showed Officer Lutz a picture of Mr. Villegas. Officer Obergon had obtained this information in the course of an investigation into Mr. Villegas’ involvement with the Mexican Posse, an inquiry he had conducted as a part of his duties as a member of the MPD’s Gang Squad. Officer Obergon also had learned of this apprehension request in the course of his investigation. Absent any reason to believe otherwise, Officer Lutz was entitled to deem reliable the information received from his fellow officer. United States v. Parra, 402 F.3d 752, 764 (7th Cir.2005) (noting that officers effecting an arrest need not know all of the facts that constitute probable cause when they reasonably act at the direction of another officer).
Thus, at the time Officer Lutz saw Mr. Villegas, Officer Lutz had trustworthy information from a reliable source, Officer Obergon, that Mr. Villegas had been deported previously and had not obtained the permission of the Attorney General to reenter the United States. When Officer Lutz saw Mr. Villegas in the hallway, Mr. Villegas was “found in[ ] the United States.” Therefore, based on the reliable information received from Officer Obergon and Officer Lutz’s own observations, Officer Lutz had probable cause to believe that Mr. Villegas had violated 8 U.S.C. § 1326(a).
Thus, there was probable cause to support Mr. Villegas’ arrest,' which rendered his continued detention lawful.4 Harris, 495 U.S. at 21, 110 S.Ct. 1640. *771Therefore, any statements made by Mr. Villegas to Agent Rickey at the county jail are not subject to the Fourth Amendment’s exclusionary rule. See id.; see also United States v. Roche-Martinez, 467 F.3d 591, 594 (7th Cir.2006) (holding that evidence of an alien’s identity obtained while the alien was in custody following an arrest pursuant to an unlawful entry did not fall within the exclusionary rule).
Conclusion
Mr. Villegas had no legitimate expectation of privacy in the common hallway of the duplex. Thus, Officer Lutz did not violate Mr. Villegas’ Fourth Amendment rights by entering the common hallway and arresting Mr. Villegas without a warrant. Further, Mr. Villegas’ arrest and continued detention were supported by probable cause. Consequently, the statements by Mr. Villegas to Agent Rickey while in custody are not subject to the Fourth Amendment’s exclusionary rule, regardless of whether Officer Lutz violated Mr. Villegas’ Fourth Amendment rights by entering the common hallway and arresting Mr. Villegas without a warrant. The judgment of the district court is affirmed. AFFIRMED
. 8 U.S.C. § 1326 provides, in pertinent part:
(a) In general
Subject to subsection (b) of this section, any alien who—
(1) has been denied admission, excluded, deported, or removed or has departed the United States while an order of exclusion, deportation, or removal is outstanding, and thereafter
(2) enters, attempts to enter, or is at any time found in, the United States, unless (A) prior to his reembarkation at a place outside the United States or his application for admission from foreign contiguous territory, the Attorney General has expressly consented to such alien's reapplying for admission; or (B) with respect to an alien previously denied admission and removed, unless such alien shall establish that he was not required to obtain such advance consent under this chapter or any prior Act,
shall be fined under title 18, or imprisoned not more than 2 years, or both.
(b) Criminal penalties for reentry of certain removed aliens
Notwithstanding subsection (a) of this section, in the case of any alien described in such subsection—
(2) whose removal was subsequent to a conviction for commission of an aggravated felony, such alien shall be fined *766under such Title, imprisoned not more than 20 years, or bothf]
. The Government subsequently moved to set aside Mr. Villegas' conviction on Count II of the indictment. The district court granted the motion.
. The primary cases to which Mr. Villegas points are United States v. King, 227 F.3d 732 (6th Cir.2000), United States v. Fluker, 543 F.2d 709 (9th Cir.1976), and Fixel v. Wainwright, 492 F.2d 480 (5th Cir.1974).
In King, the Sixth Circuit concluded that the defendant had a legitimate expectation of privacy in the shared basement of a duplex. 227 F.3d at 749-50. Although the court in King relied on Sixth Circuit precedent holding that tenants in an apartment building had a legitimate expectation of privacy in common areas not open to the public, id., the court first noted that the ultimate determination of whether a defendant has a legitimate expectation of privacy in a particular place must be determined on a case-by-case basis, id. at 744. The court then looked to the facts in that particular case in addition to circuit precedent to determine whether the defendant there had a reasonable expectation of privacy. Id. at 749-50.
The facts of King highlight the fact-specific inquiry into a reasonable expectation of privacy. Both units of the duplex involved in King were occupied by members of a single family: The defendants, who were brothers, lived in one unit while their mother and siblings lived in another. Id. at 750. Thus, the housing unit in King more closely resembled a single family house than a duplex. Further, the area in question in King was the basement of the building accessible only to the tenants, not a common hallway through which any visitor would pass to reach either of the dwelling units.
In Fluker, the Ninth Circuit determined that the defendant held a legitimate expectation of privacy in a common hallway of a duplex that normally was locked to outsiders. 543 F.2d at 712. The court emphasized that its inquiry into the defendant's legitimate expectation of privacy focused on “the particular circumstances of th[e] case.” Id. at 716. After concluding that, under those circumstances, the defendant held a legitimate expectation of privacy in the common hallway, the court added that its holding was confined to the facts of that case. Id. at 717. Unlike the present case, the facts of Fluker reveal that the residents of both units in the duplex were co-conspirators in a heroin distribution oper*769ation. Id. at 712. In that sense, the occupants had a common interest in maintaining the privacy of the common hallway. Therefore, it would not be unreasonable for each occupant to conclude that the others would maintain the privacy of all occupants of the duplex to advance their common purpose.
In Fixel, the Fifth Circuit concluded that the defendant had a legitimate expectation of privacy in a fenced, common backyard shared by the units of a four-unit, multi-family dwelling. 492 F.2d at 484. The yard was accessible only by passing through a dwelling unit. Id. In reaching this conclusion, however, the court expressly distinguished the yard from common hallways used by other tenants or outsiders to access individual units. Id. The court noted that, unlike a common hallway or entrance, the back yard was not accessible to anyone who wished to approach the building's tenants. The court further noted that the yard itself was surrounded by a fence, rendering the yard comparatively more removed and private than a common hallway. Id. Taking these factors as a whole, the court concluded that the defendant's privacy had not been so diluted by the fact that he shared the yard with other tenants of the building as to render his expectation of privacy unreasonable. Id.
The yard in Fixel is readily distinguishable from the common hallway in the present case. As noted earlier, any visitor to either unit, including delivery persons, solicitors and customers of May Franklin's business, would pass through the common hallway to reach either unit. Given the comparative openness of the common hallway, the hallway lacked the same degree of remove and privacy from the building’s visitors as the yard in Fixel.
. We note further that, in addition to Mr. Villegas' violation of 8 U.S.C. § 1326(a) and (b), at the time Mr. Villegas was arrested and taken from the duplex, Officer Lutz had probable cause to believe Mr. Villegas had violated at least four other Wisconsin state laws. First, Officer Lutz had probable cause to believe that Mr. Villegas had violated state law when he saw the object Mr. Villegas had dropped when Officer Lutz first told him that he was under arrest. See Wis. Stat. § 961.41(3g)(e). Officer Lutz testified that when he looked at the clear bag Mr. Villegas had dropped, its contents appeared to be marijuana. Officers are entitled to rely on their experience in determining whether probable cause exists. See United States v. Breit, 429 F.3d 725, 728 (7th Cir.2005). Second, after Mr. Villegas kicked Officer Lutz in the midsection, Officer Lutz had probable cause to believe that Mr. Villegas had committed the offense of battery of a police officer, regardless of whether Officer Lutz had acted with lawful authority when he attempted to arrest Mr. Villegas. See Wis. Stat. § 940.20(2); see also State v. Barrett, 96 Wis.2d 174, 291 N.W.2d 498, 500-01 (1980). Third, when Mr. Villegas spat blood and mucus on Officer Lutz, Officer Lutz had probable cause to believe that Mr. Villegas *771had committed the offense of throwing or discharging bodily fluid at a public safety worker. See Wis. Stat. § 941.375(2). Lastly, assuming that Officer Lutz believed he was acting with lawful authority when he attempted to arrest Mr. Villegas, by struggling with the officers, Mr. Villegas gave Officer Lutz probable cause to suspect that Mr. Vil-legas had committed the offense of resisting or obstructing an officer. See Wis. Stat. § 946.41(a).