In order to establish a false arrest claim, the person detained must prove that the arrest is unlawful and such unlawful arrest resulted in injury. A person commits false imprisonment when they engage in the act of restraint on another person which confines that person in a restricted area.In New York, false imprisonment is similar to false arrest, but it includes being illegally confined against your will. What Is a New York False Arrest? 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 plaintiff's claim in a warrantless false arrest lawsuit arose from a sheriff s deputy s visit to her house to check on the welfare of her daughter. Lexis 21322 (2nd Cir.). Fourth Amendment to the U.S. Constitution: This amendment protects citizens against unreasonable searches and seizures, which includes unlawful arrests. While the first 3 elements of false arrest are important, the 4th element can be the most challenging one to prove.