When can a private citizen make a citizen's arrest in California?

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Accepted Answer

1. Statutory Authority   California codifies citizen's arrest authority at   Cal. Penal Code § 837  . The arrestee must be delivered without unnecessary delay to a peace officer or magistrate (Penal Code § 847).    2. Felony Standard   A private person may arrest when a felony has in fact been committed and the arrester has reasonable cause to believe the person committed it. Mistake about identity is excused if the cause was reasonable; mistake about whether a felony occurred at all is not.    3. Misdemeanor Standard   For misdemeanors, the offense must be a "public offense committed or attempted in [the arrester's] presence" (§ 837(1)). Mere suspicion is insufficient; the citizen must perceive the conduct directly.    4. Georgia Post-Arbery Comparison   Georgia repealed its broad citizen's arrest statute via   HB 479   in May 2021 (effective for offenses on or after 5/10/2021) after the Ahmaud Arbery killing. California has not enacted comparable repeal, but litigation since 2021 has narrowed practical reliance on § 837.    5. Force Permitted   Only force reasonable under the circumstances is allowed (Penal Code § 835). Deadly force by a private person is limited to self-defense or defense of others against imminent threat of death or great bodily injury.    6. Hand-Off Duty   The arrestee must be taken before a magistrate or delivered to a peace officer "without unnecessary delay" (§ 847). Failure exposes the citizen to false-imprisonment liability.    7. Risks   False arrest, battery, and kidnapping (Penal Code § 207) charges may follow if § 837 requirements are not met. Civil damages under § 847(b) are available against the citizen personally.    8. Shopkeeper's Privilege     Cal. Penal Code § 490.5(f)   authorizes merchants and their employees to detain a person they reasonably believe is shoplifting, for a reasonable time and in a reasonable manner. This is narrower than § 837 but provides statutory immunity.    9. Stand-Your-Ground / Castle Doctrine   Penal Code § 198.5 creates a home-defense presumption; this is distinct from citizen's arrest authority.    10. Practical Recommendation   Most California attorneys advise calling 911 rather than effecting a citizen's arrest. The civil and criminal exposure rarely justifies the action.  This is legal information, not legal advice.