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

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Accepted Answer

1. Statutory Authority   Pennsylvania has no broad citizen's arrest statute. Authority derives from common law, with use-of-force rules codified at   18 Pa.C.S. § 508   (use of force in law enforcement).    2. Felony Standard   Under Pennsylvania common law, a private person may arrest without warrant for a felony committed in their presence, or where a felony has actually been committed and the citizen has probable cause to believe the arrestee committed it ( Commonwealth v. Corley , 491 A.2d 829 (Pa. 1985)).    3. Misdemeanor Standard   For misdemeanors, the offense must amount to a breach of the peace and occur in the citizen's presence. Ordinary misdemeanors do not authorize private arrest in Pennsylvania.    4. Georgia Post-Arbery Comparison   Georgia repealed its broad citizen's arrest statute via   HB 479   in May 2021 after Ahmaud Arbery's killing. Pennsylvania's common-law doctrine has not been altered, but courts construe it narrowly.    5. Force Permitted     18 Pa.C.S. § 508(b)   permits a private person assisting an officer, or making a lawful arrest, to use force justifiable for the officer except that deadly force is permissible only when the citizen believes such force is necessary to prevent death or serious bodily injury or in the defense of another against deadly force.    6. Hand-Off Duty   The arrestee must be promptly turned over to a law enforcement officer.    7. Risks   False imprisonment (18 Pa.C.S. § 2903), unlawful restraint (§ 2902), simple assault, and civil tort liability for false arrest and battery.    8. Shopkeeper's Privilege     42 Pa.C.S. § 8307   provides merchants with immunity for detaining suspected shoplifters when probable cause exists and the detention is reasonable in time and manner.    9. Stand-Your-Ground / Castle Doctrine     18 Pa.C.S. § 505(b)(2.3)   provides stand-your-ground rights in any place where the actor is lawfully present; this is independent of arrest authority.    10. Practical Recommendation   Pennsylvania attorneys recommend calling 911 and acting as a witness rather than effecting a citizen's arrest. The narrow common-law authority creates substantial risk of civil and criminal liability.  This is legal information, not legal advice.