Powers of investigation, appointment of ad hoc investigator, etc

(1) In any case relating to the commission of an offence under this Act, the Commission, or the special investigator may, without the order of the Commissioner of Police, exercise all or any of the powers in relation to police investigations. (2) In any case relating to the investigation of an offence under this Act, the Commission may appoint an ad hoc special investigator to perform specific duties assigned to it by the (3) Where an ad hoc special investigator has been appointed under subsection (2) of this section, he shall have only those powers in relation to police investigations which the Commission specifically confers upon him in writing.