- Section 59 of the Code of Criminal Procedure, 1973 specifies the circumstances under which a person arrested without warrant shall be discharged by a police officer. These are: on execution of his bond, on bail, or under the special order of a Magistrate. - Discharge upon completion of trial is a judicial process that occurs after the trial proceedings are over, resulting in acquittal or conviction. This is not a decision or action taken by the arresting police officer regarding the initial custody.