Were You Falsely Arrested, or Hurt By a Police Officer's Excessive Force? CALL OUR OFFICE For a Free Consultation or Simply Fill Out a CASE INTAKE FORM.False arrest occurs when a police officer or other law enforcement officer place someone under arrest without lawful justification. We bring years of experience to the table in defending false arrest cases in New York City. Our lawyers are well-versed in the nuances of New York laws. The NYPD has prepared important information on the criminal justice process in New York City so you can become more familiar with many procedures. Call (212) 587-8423. Arrest without a warrant: a. For an offense when reasonable cause to believe offense committed in his presence, or. The main difference between the two is that false arrest requires an arrest, but, false imprisonment only requires unlawful detention.