False arrest in California: when you can sue the police for a wrongful arrest

If you were handcuffed, booked or held by police when you had done nothing wrong, you may be able to sue. A false arrest lawyer in California looks at one central question first: did the officers have probable cause? If they did not, the arrest may support claims under both California law and the federal Constitution, against the officers and the agency that employs them.

This guide explains what probable cause means, the state-law claim for false imprisonment, the California statute that protects officers in some arrests, the federal Fourth Amendment claim, the deadlines, and the records you should request now. It is general information, not advice about your case. Being arrested is frightening and humiliating, and it is reasonable to want answers.

What makes an arrest "false" or wrongful?

An arrest is not unlawful just because the charges were later dropped, or because you were found not guilty. The law asks what the officers knew at the moment of arrest. Officers need probable cause: facts and reasonably trustworthy information that would lead a reasonable officer to believe the person committed a crime. Probable cause is less than proof, but more than a hunch, a stereotype or an anonymous rumor.

Common situations where we see arrests without probable cause include:

• Mistaken identity, where officers arrest the wrong person with a similar name or description and ignore obvious differences.
• Arrests for "resisting" or "obstruction" after a person questioned an officer, filmed the police or refused a search they had the right to refuse.
• Arrests based on a report the officer had clear reason to doubt, or that the officer never checked.
• Arrests where the officer's report does not match the body camera video.
• Holding someone far longer than the law allows, or after it was clear they were not involved.

Charges are also looked at one by one. In a 2024 malicious prosecution case, Chiaverini v. City of Napoleon, the U.S. Supreme Court held that probable cause for one charge does not necessarily mean there was probable cause for every other charge. That matters when officers pile on charges after the fact.

California false arrest and false imprisonment claims

Under California law, false arrest is treated as a form of false imprisonment: holding a person without lawful justification, against their will, for some appreciable time, however short. A claim can be brought against the officer and, in most cases, the city or county that employs them. A public entity is generally liable for its employees' acts within the scope of employment unless the employee is immune (Government Code § 815.2).

California's general immunity for officers enforcing the law with due care has an important exception. It says plainly: "Nothing in this section exonerates a public employee from liability for false arrest or false imprisonment" (Government Code § 820.4).

Penal Code § 847: when officers are protected

The main defense in these cases is Penal Code § 847(b). It says there is no claim for false arrest or false imprisonment against a peace officer acting within the scope of their authority if:

1. the arrest was lawful, or the officer, at the time of the arrest, "had reasonable cause to believe the arrest was lawful";
2. the arrest was made under a charge, made upon reasonable cause, of a felony; or
3. the officer was required to make the arrest under certain other Penal Code sections (§§ 142, 837, 838 or 839), which cover situations such as taking custody of a person after a citizen's arrest.

So the fight in most state cases is over whether the officer had reasonable cause. If the facts the officer actually had would not lead a reasonable officer to believe a crime was committed, § 847 does not protect the arrest.

The Bane Act

An arrest without probable cause can also support a claim under California's civil rights law, the Bane Act (Civil Code § 52.1), which allows damages and attorney's fees. A leading Bane Act case, decided by a California Court of Appeal in 2017, involved a man wrongly arrested while jogging in a park. The claim requires proof that the officer acted with specific intent to violate the right, which reckless disregard of the right can satisfy.

Federal claims: the Fourth Amendment and § 1983

An arrest is a "seizure" under the Fourth Amendment, and an arrest without probable cause is unconstitutional. A person can sue the officers under 42 U.S.C. § 1983. The city or county can be sued under § 1983 only if its own policy, custom or failure to train caused the arrest.

Officers will usually raise qualified immunity, a federal defense that can protect them unless the law was "clearly established." That defense does not apply to the state-law claims above, which is one reason to preserve them by meeting the state deadline.

If the arrest also involved force, such as a takedown, a Taser or a dog, read our guide to excessive force claims. If charges were filed and pursued based on false reports, the case may also involve malicious prosecution or fabricated evidence, which are separate claims with different rules.

How long do you have to sue for a wrongful arrest?

• State-law claims (false imprisonment, Bane Act, battery) against a city, county or the State: a written government claim generally must be presented within six months of the arrest (Government Code § 911.2). See our guide to the six-month government claim deadline.
• Federal § 1983 false arrest claims: generally two years in California, with no claim requirement. But the clock usually starts earlier than people expect. Under Wallace v. Kato (2007), it generally begins when you are held under legal process, such as when you are arraigned, not when the charges are later dropped.
• If charges are pending: California generally bars a person facing criminal charges in superior court from suing the officer or agency over conduct related to those charges while they are pending, and pauses the time to sue during that period. But that rule does not extend the six-month deadline to present a government claim (Government Code § 945.3). Talk to a lawyer before giving any statement, because what you say in a civil case can be used in the criminal case.

If you were convicted

Here is a hard rule in plain words. If you were convicted, and a federal claim would mean the conviction was wrong, you generally cannot bring that federal claim while the conviction stands. It has to be reversed, expunged, declared invalid, or overturned through a habeas petition first. The Supreme Court set out this rule in Heck v. Humphrey (1994). Some claims, such as excessive force during the arrest, may still go forward even with a conviction, depending on what the conviction was for. A plea deal can have the same effect as a trial conviction, so talk to a civil rights lawyer before you accept a plea if you plan to sue.

What records should you get after a false arrest?

Records disappear or get harder to obtain over time. These are the ones we usually request or preserve:

1. The arrest report and any supplemental reports, plus your booking record and booking photo.
2. Body camera and dash camera video from every officer present, and any jail intake video.
3. Dispatch audio, 911 calls and computer-aided dispatch logs, which show what officers were told before the arrest.
4. The court file: the complaint, minute orders and the dismissal or acquittal order.
5. Your release paperwork and any property receipt.
6. Names and phone numbers of witnesses, and any video taken by bystanders or nearby businesses.
7. Records of lost work, medical or counseling visits, and bail or legal costs.

Some officer misconduct records are public under Penal Code § 832.7, including certain sustained findings of dishonesty and, since a 2021 amendment, certain sustained findings of unlawful arrests. We send preservation letters early so video and logs are not erased under routine retention schedules.

How LaCour handles false arrest cases

LaCour Trial Lawyers is a trial firm led by founding partner Jonathan P. LaCour. We handle police misconduct and wrongful death in custody cases across California, including arrests that ended in serious injury or death (see our police shooting wrongful death guide). We have Spanish-speaking lawyers and staff and work on contingency: no fee unless there is a recovery. Ask for a free, confidential review.

Frequently asked questions

This guide is general information about California and federal law and about public records as of its date. It is not legal advice, and reading it or contacting us does not create an attorney–client relationship. Allegations in lawsuits are claims, not findings. Prior results do not guarantee a similar outcome. Attorney advertising.