David Haywood brought suit for damages under 42 U.S.C. § 1983 against the City of Chicago and two of its police officers, charging false arrest and detention in violation of his federal constitutional rights. He appeals from the grant of the defendants’ motion for summary judgment, and so we construe the facts as favorably to him as the record permits, simplifying them where possible.
When arrested, Haywood was employed by a pawnshop as an armed security guard. He was just beginning his commute to work from his home on Chicago’s south side one day when the defendant police officers, Maras and Marozas, acting on a tip that Haywood was armed, pulled him over. They asked him where he was going; he explained that he was on his way to the pawnshop. They noticed that he had two guns with him; he told them he had papers that proved he was authorized to carry them and he showed them the papers. The papers included a firearm owner’s identification card and a “blue card,” which certifies eligibility to work for a licensed security agency, 225 ILCS 446/80 (2002), reenacted at 225 ILCS 447/35-30, but did not include either a Chicago gun registration certificate or a “tan card,” which certifies that the cardholder, being employed by a licensed security agency (which Haywood probably was not, although this is uncertain) and having received firearms training, may carry a weapon while working or commuting. 225 ILCS 446/185(a), (b), (e) (2002), reenacted at 225 ILCS 447/35-35(a) through (d); 720 ILCS 5/24-2(a)(5). He also had a memo from the police department stating that individuals licensed by the state under the Private Detective, Private Alarm, Private Security, and Locksmith Act of 1993, 225 ILCS 446/1 et seq. (2002), do not have to register their weapons; Haywood probably was not licensed, but again this is uncertain. The officers arrested him, though apparently only because he failed to show them a Chicago gun registration certificate, the failure being “presumptive evidence that he [was] not authorized to possess such firearm.” Chicago Municipal Code § 8-20-150. The officers seem to have been unaware that he should have had a tan card as well.
Haywood was jailed, and the next day taken before a state court judge for a probable-cause hearing. No one testified at the hearing. The only evidence submitted (besides the arrest report, on which *716 the defendants no longer place any weight) to persuade the judge to find probable cause to detain Haywood was a complaint charging him with knowingly carrying a concealed, loaded firearm without a license, in violation of 720 ILCS 5/24-1.6(a)(1), (3)(A). He was not charged with having failed to register his guns; they may have been registered, though this is uncertain and he hadn’t had a registration certificate with him when he was arrested.
In the space in the complaint for the “complainant’s signature” appeared Officer Marozas’s name, but in fact Maras had written the complaint and had signed Ma-rozas’s name to it. There was no indication of this anywhere in the document, however; nor did the prosecutor mention the fact, of which she may have been unaware, at the hearing. In the place in the complaint for a judge’s or court clerk’s signature (the “jurat ” — Latin for “he swears”), attesting that Marozas had both signed the complaint and sworn to the truth of its contents, Maras had written and signed the name of still another police officer, Brumley. Chicago police officers are eligible to sign the jurat because they are appointed as deputy clerks of the Cook County circuit court. But Brumley, even if he’d signed the jurat, could not have truthfully sworn that Marozas had signed the complaint, because he hadn’t.
On the basis of the complaint, the judge ruled that there was probable cause to hold Haywood, and it took the latter 10 days to raise bail money and get out of jail. The charge against him was later dropped. Haywood contends, and for purposes of ruling on summary judgment we must assume, that until the defendants began to prepare their defense against his suit neither the prosecutor, nor the police officers who had arrested Haywood, were aware that his failure to have a tan card was a crime.
He contends that the arrest violated his Fourth Amendment rights because it was not based on probable cause to believe he’d violated any law. The defendants counter with the principle that if arresting officers know facts that indicate that the person they arrested has committed a crime, the fact that they didn’t know the legal significance of those facts does not invalidate the arrest. E.g.,
United States v. Reed,
The defendants point to two facts known (though their legal significance probably was not) to the officers that demonstrate probable cause to arrest Haywood. The first is that he was arrested at about 7:45 a.m., and when one of the officers called the pawnshop to verify Haywood’s employment the person who answered the phone told him that Haywood’s starting time was 9 a.m. It is illegal for a security guard to carry a weapon to and from work unless “such commuting is accomplished within one hour from departure from home or place of employment, as the case may be.” 720 ILCS 5/24-2(a)(5). So if Haywood, having left his home sometime before 7:45 (in fact, he testified, at 7:39), would not arrive at work until 9, he would violate the one-hour rule. But the fact that Haywood’s official start time is 9 a.m. is weak evidence that he wasn’t planning to arrive *717 until then. To be on time, one has to plan to arrive somewhat early (especially if the employee is expected to change into a uniform, or make other preparations, at his place of employment before actually beginning to work)—and in fact Haywood testified (and had told the arresting officers) that he was due at the pawnshop by 8:45. If that was the expectation, to satisfy it he would have to arrive a few minutes before then. If he arrived at 8:39, he would have been commuting for only an hour.
So there was only slight reason to think he was going to violate the one-hour rule. This was provided the police believed that he was expected to show up at work 15 minutes before his official starting time. But though they didn’t have to believe him, they didn’t call the pawnshop and learn about Haywood’s 9 a.m. start time until after they had arrested him. So it was not a fact that they knew at the time of his arrest; and “what an arresting officer does not know is inadmissible to show that he had probable cause for the arrest—otherwise hindsight would validate every arrest of a person who turned out to be a criminal.”
Villanova v. Abrams,
We needn’t resolve the one-hour issue, however, because there is still the missing tan card and its absence clearly created probable cause to arrest Haywood. Of course, not knowing that Haywood should have had a tan card, it is only in an attenuated sense that the officers can be said to have “known” that he did not have it. But he purported to exhibit to them the papers that authorized him to carry a gun, and a police officer who knew the law would have seen that the array was incomplete. See
People v. Mourecek,
So Haywood was arrested lawfully. But he could not, consistent with the Fourth Amendment, be continued in custody beyond 48 hours (with inapplicable exceptions) unless a judicial officer determined that there was probable cause to believe that he had committed a crime.
County of Riverside v. McLaughlin,
*718
The officers’ depositions described the practice of signing someone else’s name (without disclosure) to a criminal complaint as common, and there is no contrary evidence. If it is common enough to be described as customary — as a practice that the City has so far condoned as to make it a policy — -this would be sufficient to defeat any argument that if the practice is unconstitutional the City nevertheless, by virtue of the doctrine of
Monell v. Department of Social Services,
Nor do the officers argue qualified immunity in this court. Rather they argue that since an arrest is commonly made on the basis of an unsworn statement, such as an informer’s tip, “a judicial officer should be no less entitled to rely on unsworn evidence, including the statements of police officers, when assessing probable cause to arrest.” Not only is there a difference between evidence that the judicial officer knows is unsworn and evidence that he is fraudulently induced to believe has been sworn, but the argument contradicts the defendants’ position that a falsely sworn statement is the equivalent of a properly sworn statement.
Their further argument — that because the Fourth Amendment mentions “Oath or affirmation” only in connection with the issuance of warrants, less evidence is required to detain a person indefinitely than to arrest him even though the curtailment of liberty is greater — is wooden, and was rejected by the Supreme Court in
Gerstein v. Pugh,
The only basis for a finding of probable cause on which the state relies in this case, however, was a falsely sworn complaint whose falsity was, so far as appears, unknown to the judge at the probable-cause hearing. (Compare
United States v. Causey,
The defendants’ last line of defense is that the fraud was harmless, as in cases of typographical errors and other inadvertent technical irregularities,
United States v. Skinner,
Immaterial falsehoods, even deliberate ones, in an affidavit that is presented to a judge or magistrate in support of a request for the issuance of an arrest or search warrant do not invalidate the warrant should it be issued.
Franks v. Delaware,
Affiemed In Part, Reversed In Part, And Remanded.
