False imprisonment occurs when one person unlawfully restricts another's freedom of movement. The main difference between the two is that false arrest requires an arrest, but, false imprisonment only requires unlawful detention.False imprisonment occurs when a father locks his son in a room as punishment or when a woman blocks the home's doorway so that her wife cannot leave. False arrest requires an arrest, but, false imprisonment only requires unlawful detention. False imprisonment is the intentional and unlawful act of restricting someone else's freedom of movement. It differs from kidnapping. See Groman, 47 F. 3d at 636. Both false arrest and false imprisonment claims therefore require Cannon to plead an absence of probable cause. False imprisonment involves someone attempting to cause a bodily injury to another. In. Pennsylvania, an action for assault, battery, false imprisonment, or false arrest must be commenced within two years.