13-3884. Arrest by private person A private person may make an arrest: 1. When the person to be arrested has in his presence committed a misdemeanor amounting to a breach of the peace, or a felony. 2. When a felony has been in fact committed and he has reasonable ground to believe that the person to be arrested has committed it.
Arizona Legal Code
§ 13.3884
Source: https://www.azleg.gov/ars/13/03884.htm· Version 2026