Idaho Code § 19-604 (2018)
Idaho Code Annotated
TITLE 19. CRIMINAL PROCEDURE
CHAPTER 6. ARREST, BY WHOM AND HOW MADE
§ 19-604. When private person may arrest
A private person may arrest another:
1. For a public offense committed or attempted in his presence.
2. When the person arrested has committed a felony, although not in his presence.
3. When a felony has been in fact committed, and he has reasonable cause for believing the person arrested to have committed it.
(Updated LEXIS 4/12/18)