A false arrest is where police arrest someone without probable cause to arrest them. Probable cause is a very low standard in the law.Other available claims include false arrest, which may lie where police arrest someone without probable cause. "False imprisonment is the unlawful arrest and detention of the person of another, with or without a warrant or other process. 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. A peace officer may make a valid arrest without a warrant in certain circumstances other than those set out in this instruction. IV and Neb. Const. art. A false arrest occurs when police arrest someone without probable cause to arrest them. Probable cause is a very low standard in the law. The Court addresses each of the Section 1983 claims in turn.