(1) The State Government may, by an order published in the Official Gazette, constitute a Bureau of Investigation and it shall consist of such personnel and such number of officers and such hierarchy of supervision and control as may be specified by the State Government in the said order:
     Provided that if authorities appointed under sub-section (1) of section 10 are specified as such they shall, without prejudice to the powers under sub-section (1) of section 10, exercise the powers of an authority under sections 55, 56, 57, 58, 59, 60, 61 and 62 for carrying out the purposes of this Act.
     (2) (a) The State Government may, by an order published in the Official Gazette, vest an officer of the Bureau of Investigation with the powers of an officer in-charge of a police station under the Code of Criminal Procedure, 1973 (2 of 1974) and with such other powers under different Acts, as it may consider necessary.
         (b) The Commissioner may, by an order published in the Official Gazette, authorise an officer of the Bureau of Investigation to exercise the powers of an authority appointed under section 10 in respect of such matters as may be specified in the order.
     (3) The Bureau of Investigation shall function under the control and supervision of the Commissioner, and discharge such duties as may be assigned to it by the Commissioner, including investigation of offences under section 83 of this Act.