Imprisonment is the act of confining someone in a prison or as if in a prison. Imprisonment is carried out generally as a penalty imposed by a court. As such penalty, the individual is confined to an institution. Most obvious modes are confinement in a prison or a private house. Further, a forcible detention in the street, or the touching of a person by an officer by way of arrest, are also imprisonments. Imprisonment restraints of a person contrary to his will. Imprisonment is either lawful or unlawful. Lawful imprisonment is used either for crimes or for the appearance of a party in a civil suit, or on arrest in execution. Whereas, unlawful violation of the personal liberty of another is called false imprisonment.