Can you interfere with an unlawful police detention in Utah? American Fork City v. Pena-Flores Explained

In American Fork City v. Pena-Flores, the Utah Court of Appeals addressed whether a person can be convicted of interfering with a peace officer when the underlying detention is later determined to be unlawful. The court’s holding provides important clarity for both criminal defense practitioners and law enforcement.

Background and Facts

During American Fork’s Steel Days carnival, police detained known gang members based on information about potential retaliation between rival gangs. Officers wore clearly marked uniforms and escorted gang members from the carnival’s back corner to the front for interviews and photographs. When defendant Pena-Flores, who was associating with the gang members, repeatedly told his friends they did not have to cooperate with police despite officers’ orders to step back, he was arrested and convicted of interfering with a peace officer under Utah Code § 76-8-305.

Key Legal Issues

The case presented two critical questions: (1) whether the police encounter constituted a level-two detention rather than a consensual encounter, and (2) whether Utah Code § 76-8-305 requires a lawful arrest or detention for a conviction. Defendant argued that either no detention occurred or, if one did, it lacked reasonable suspicion and was therefore unlawful.

Court’s Analysis and Holding

The court first determined that police had indeed detained the gang members, noting they were physically escorted and that Officer Leavitt testified the individuals were detained for investigation purposes. More significantly, the court held that the statute’s use of “seeking to effect” a lawful arrest or detention protects officers acting within their authority with apparent lawfulness, even when the underlying detention is later found unlawful. The court emphasized that bystanders should not make real-time determinations about detention legality.

Practice Implications

This decision significantly limits defenses to interference charges based on Fourth Amendment violations. Practitioners should focus on whether officers acted within their scope of authority and whether the detention appeared lawful to a reasonable observer, rather than challenging the underlying reasonable suspicion. The court’s interpretation aligns Utah with the majority of jurisdictions that prohibit resistance to police actions regardless of their ultimate legality.