Background
United States v. Hensley involved a police stop based on a wanted flyer issued by another police department. Police in St. Bernard, Ohio, were investigating an armed robbery. As part of that investigation, they issued a flyer stating that Thomas Hensley was wanted for investigation of the robbery and should be considered armed and dangerous.
Several days later, officers in Covington, Kentucky, saw Hensley in a vehicle. The officers knew about the flyer, but they did not personally know all of the facts behind the Ohio robbery investigation. Relying on the flyer, they stopped the vehicle to check on Hensley. During the stop, officers observed a firearm in the vehicle. A further search led to the discovery of additional firearms.
Hensley was charged in federal court with unlawful possession of firearms. He argued that the stop violated the Fourth Amendment because the Kentucky officers did not have firsthand knowledge of the facts connecting him to the robbery. The case eventually reached the Supreme Court of the United States.
Issue Before the Court
The question in United States v. Hensley was whether police may make an investigative stop based on a wanted flyer or bulletin from another department when the person is suspected of involvement in a completed felony, not a crime currently happening in the officer’s presence.
In plain English, the Court had to decide whether an officer can briefly stop someone to investigate a past serious crime when the officer is relying on another agency’s notice, and what level of justification is required for that stop to be lawful.
Decision
The Supreme Court held that police may conduct a Terry-style investigative stop to investigate a completed felony if they have reasonable suspicion, based on specific and articulable facts, that the person was involved in that felony. The Court extended the Terry stop concept beyond imminent or ongoing crime and allowed it for completed felonies, recognizing that police have a strong interest in investigating serious crimes, identifying suspects, and preventing flight or further danger.
The Court also held that officers may rely on a wanted flyer or bulletin issued by another department, but the legality of the stop depends on whether the agency that issued the flyer had reasonable suspicion in the first place. The stopping officers do not need to personally know every fact supporting the suspicion, but the government must be able to show that the originating department had enough facts to justify the flyer. If the flyer was not supported by reasonable suspicion, the stop cannot be saved merely because the stopping officers relied on it in good faith.
For police work, the practical rule is this: an officer may make a brief investigative stop based on another agency’s wanted flyer for a completed felony, so long as the flyer or bulletin is backed by reasonable suspicion at its source. The stop must still be limited in scope and duration, and any protective actions must be justified by officer-safety concerns or other facts known at the time.
Plain-English Implications for Police Work
United States v. Hensley is important for patrol officers because it confirms that officers may act on wanted flyers, BOLOs, and similar interagency notices. An officer in the field does not have to stop and independently re-investigate the entire case before making a brief stop. If a reliable police bulletin says a person is wanted for investigation of a serious completed felony, an officer may generally rely on that bulletin to make an investigative stop.
But the case also puts responsibility on the originating agency. The department that issues the flyer must have specific facts amounting to reasonable suspicion. A vague hunch, an unsupported accusation, or a poorly documented rumor is not enough. If the stop is later challenged in court, the prosecution may need to prove what facts supported the bulletin when it was issued.
For detectives and supervisors, the lesson is to document the basis for any flyer or bulletin. If the notice says a person is wanted for a robbery, assault, shooting, or other felony, the file should show the facts connecting that person to the crime. That could include witness information, suspect descriptions, vehicle information, informant details, or other investigative facts. The Supreme Court’s rule depends on the issuing agency having reasonable suspicion, so documentation matters.
For patrol officers, Hensley supports making the stop, but it does not turn every wanted flyer into automatic probable cause for arrest. The stop remains an investigative detention unless other facts develop. Officers may ask questions, verify identity, and take reasonable safety precautions, especially where the notice says the suspect may be armed and dangerous. However, the detention must remain tied to the purpose of the stop and cannot be treated as a full arrest or broad search without additional legal justification.
The case is strongest when the suspected offense is a completed felony. The Supreme Court specifically addressed completed felonies and did not create an unlimited rule for every past minor offense. If an agency wants to rely on Hensley for a completed misdemeanor or nonviolent minor offense, that detail needs source verification and careful legal review under current local and federal law.