Illegal stops and searches
The place to fight an unlawful stop or search is in court, with a lawyer, not on the street. During the stop, stay calm, do not resist, do not consent to a search, and do not answer questions about the case. Afterward, write down what happened and call a lawyer, because the time to raise a challenge is limited.
What the Constitution protects
The Fourth Amendment protects people against unreasonable searches and seizures of their persons, houses, papers and effects, and warrants may issue only on probable cause supported by oath or affirmation [1]. Police generally must get a warrant before searching the data on a cell phone seized during an arrest [2].
Whether a particular stop or search was lawful depends on the facts: what the officer saw, what was said, and what happened in what order. That is why the details you remember matter, and why the argument belongs in court, not at the scene.
During a stop
- Stay calm. Keep your hands where the officer can see them.
- Do not run, resist or touch the officer, even if you believe the stop is wrong.
- If asked to search you, your bag, your car or your phone, say: "I do not consent to a search." Say it once, clearly, and do not physically interfere.
- Do not unlock your phone or give your passcode.
- Do not answer questions about the case. Say: "I want to remain silent. I want a lawyer." If you are in custody, questioning must stop once you say it [3].
- If you are driving, have your license, registration and insurance ready, and hand them over when asked.
After the stop
Write down everything as soon as you can: the time and place, the officers' names or badge numbers, what they said, what they searched and in what order, who was with you, and any cameras on nearby buildings. Keep any paperwork you were given. Give it all to your lawyer, and do not post about it.
The deadlines to challenge it
Your lawyer challenges a stop or search in a written motion before trial, and the courts set deadlines for pretrial motions. Call early so that no deadline passes while you wait.
New York
Pretrial motions must be served or filed within 45 days after arraignment and before trial, or within extra time the court allows; the period is extended in listed situations, for example when certain discovery or a notice of intent to use evidence is served later [4].
Pennsylvania
The omnibus pretrial motion must be filed and served within 30 days after arraignment, unless the opportunity did not exist, the defense was unaware of the grounds, or the court extends the time for cause [5].
New Jersey, Florida and federal court
In these courts the time to file pretrial motions is set by court rule or by the judge, and it depends on the case. Your lawyer tracks it from the first court date, so call as soon as the case starts.
What a court can do if it finds a stop or search unlawful depends on the court and the facts of your case. Ask your lawyer what it could mean for yours. For the usual order of steps, use What happens next or see New York, New Jersey, Florida, Pennsylvania or federal court.
If the stop involved force or abuse by the police, the firm's site copsmustpay.com covers police misconduct claims.
Common questions
Should I tell the officer the stop is illegal?
No. Stay calm and polite, say you do not consent to a search, and say you want a lawyer. Arguing at the scene does not help. Your lawyer raises it in court.
What should I write down afterward?
The time and place, what the officers said and did, what they searched, who was with you, and any cameras nearby. Give it to your lawyer, not to anyone else.
Sources
- U.S. Const. amend. IV. Current as of November 11, 2026. Official text
- Riley v. California, 573 U.S. 373 (2014). Current as of November 11, 2026. Official text
- Miranda v. Arizona, 384 U.S. 436 (1966). Current as of November 11, 2026. Official text
- N.Y. Crim. Proc. Law ยง 255.20(1) (rev. 2020-01-10). Current as of November 11, 2026. Official text
- Pa. R. Crim. P. 579(A). Current as of November 11, 2026. Official text
Arrested, or think you might be? Call before you answer any questions.
Call and tell us who was arrested or contacted and where the case is. A lawyer will tell you what happens next and what to do tonight. Please do not type what happened into a form or an email. We will talk about it on the phone.