Under what conditions can a private citizen assist a law enforcement officer in effecting an arrest?

A private citizen can assist a law enforcement officer in effecting an arrest primarily when the officer has specifically requested their assistance. This criterion ensures that the officer retains overall control of the situation and that the citizen’s involvement is both lawful and purposeful. It also implies that the officer assesses the necessity of additional help in a given context, which could vary widely depending on the circumstances surrounding the arrest.

The requirement for a request from an officer provides a clear legal framework that protects both the citizen and the officer, ensuring actions taken are within the rights and duties of law enforcement. This encompasses the idea of collaboration in public safety while maintaining the appropriate roles in law enforcement.

While a crime in progress might suggest urgency for immediate action, the essence of legally assisting necessitates prior engagement or directive from the officer, thereby highlighting the importance of maintaining order and authority during an arrest situation. This makes it clear that intervention without an officer's request can lead to complications or misunderstandings regarding the authority of the private citizen.