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Officer authority & limits

Citizen's Arrest in California: What Penal Code 837 Allows

Updated 2026-07-15 · 6 min read · Sacramento, CA dispatch

PPO #122730

Short answer

California Penal Code Section 837 allows a private person — including a security officer, who holds no greater arrest authority than any other citizen — to arrest someone for a public offense committed or attempted in their presence, or for certain felonies where there is reasonable cause. It does not create police powers, does not authorize searches, and does not permit force beyond what is legally reasonable to complete a lawful arrest.

What the statute says

Penal Code 837 permits a private person to arrest another for a public offense committed or attempted in the arresting person's presence, when the person arrested has committed a felony even though not in the arresting person's presence, or when a felony has actually been committed and the private person has reasonable cause to believe the person arrested committed it. A licensed private security officer acts under this same statute — California law does not grant security guards independent arrest powers beyond those available to any private citizen.

In practice this is a narrow, high-liability power. Making an arrest that turns out to be unjustified can expose the officer and the company to false-imprisonment and other civil claims. Most licensed patrol companies train officers to observe, document, and request police response rather than exercise citizen's-arrest authority except in limited, clearly justified circumstances.

What PC 837 does NOT authorize

  • It does not authorize searching the arrested person beyond what is necessary for the immediate safety of the arrest, and does not authorize seizing property beyond what is reasonably necessary.
  • It does not authorize force beyond what is objectively reasonable to complete the arrest and prevent escape — see the companion article on use-of-force limits.
  • It does not replace calling law enforcement, who must still respond to take custody and process the case.
  • It does not apply to non-criminal disputes, civil matters, or simple refusal to identify oneself absent an underlying offense.

Official sources & local data

We link to the agencies rather than reprinting them, so you always land on the current version. Summit Force is not affiliated with or endorsed by any agency listed here.

Connected concepts

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The services this applies to

Where we cover this

Questions we get every week

Citizen's Arrest in California: What Penal Code 837 Allows — the follow-ups

Do security guards have more arrest power than regular citizens?
No. California law gives private security officers the same citizen's-arrest authority under Penal Code 837 as any other member of the public, not police powers.
What happens after a citizen's arrest?
The person making the arrest must, without unreasonable delay, turn the arrested person over to a peace officer or take them before a magistrate, per related Penal Code provisions. Calling police immediately is standard practice.
Can a citizen's arrest lead to liability?
Yes — an unjustified arrest can expose the person who made it to civil claims such as false imprisonment. This is why documentation and restraint are emphasized in officer training.

Keep reading

All 8 California Security Law Library pages

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