A false arrest claim under federal law requires a plaintiff to prove that the arresting officer lacked probable cause to arrest the plaintiff. False arrest, sometimes called false imprisonment, happens when someone wrongfully takes you into custody or holds you against your will.In the US, a "false arrest" requires that a LEO KNOWINGLY arrests a person against whom they do not have probable cause. In that case, one individual holds another against their will or takes them into custody without consent or legal authority to do so. A false arrest is the unreasonable seizure of someone's personality. A seizure is considered unreasonable when there is a lack of probable cause to support it. 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. The individual made a false statement or submitted falsified documents during a proceeding. On the other hand, a defendant commits the tort of false arrest when they unlawfully arrest another person. Please fill out completely.