Section 121. Execution of sentence of imprisonment

121. Execution of sentence of imprisonment . — (1) Whenever any sentence of imprisonment is passed under this Act by a Security Force Court or whenever any sentence of death is commuted to imprisonment, the confirming officer or in case of a Summary Security Force Court the officer holding the court or such other officer as may be prescribed shall, save as otherwise provided in sub-sections (3) and (4) direct that the sentence shall be carried out by confinement in a civil prison. (2) When a direction has been made under sub-section (1) the Commandant of the person under sentence or such other officer as may be prescribed shall forward a warrant in the prescribed form to the officer in charge of the prison in which such person is to be confined and shall arrange for his despatch to such prison with the warrant. (3) In the case of a sentence of imprisonment for a period not exceeding three months and passed under this Act by a Security Force Court, the appropriate officer under sub-section (1) may direct that the sentence shall be carried out by confinement in Force custody instead of in a civil prison. (4) On active duty, a sentence of imprisonment may be carried out by confinement in such place as the Deputy Inspector-General within whose command the person sentenced is serving or any prescribed officer, may from time to time appoint. 1[ ( 121A ) Period of custody undergone by a person to be set off against the — imprisonment. When any person subject to this Act is sentenced by a Security Force Court to a term of imprisonment, not being an imprisonment in default of payment of fine, the period spend by him in civil or Force custody during investigation, inquiry or trial of the same case, and before the date of order of such sentence, shall be set off against the term of imprisonment imposed upon him, and the liability of such person to undergo imprisonment on such order of sentence shall be restricted to the remainder, if any, of the term of imprisonment imposed upon him.] — 122. Temporary custody of offender. Where a sentence of imprisonment is directed to be undergone in a civil prison the offender may be kept in Force custody or in any other fit place, till such time as it is possible to send him to a civil prison.