Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989
9. Conferment of powers
(1) Notwithstanding anything contained in the Code or in any other provision of this Act, the State Government may, if it considers it necessary or expedient so to do,-
(a) for the prevention of and for coping with any offence under this Act, or
(b) for any case or class or group of cases under this Act, in any district or part thereof, confer, by notification in the Official Gazette, on any officer of the State Government, the powers exercisable by a police officer under the Code in such district or part thereof or, as the case may be, for such case or class or group of cases, and in particular the powers of arrest, investigation and prosecution of persons before any Special Court.
(2) All officers of police and all other officers of Government shall assist the officer referred to in sub-section (1) in the execution of the provisions of this Act or any rule, scheme or order made thereunder.
(3) The provisions of the Code shall, so far as may be, apply to the exercise of the powers by an officer under sub-section (1).