(1)  An inquiry officer, for the purpose of assisting with the conduct of an inquiry, may, after obtaining a written notice of authorisation from the Chief Commissioner, enter any premises of a public authority without the need for consent or a search warrant and may enter other premises at any reasonable time with the consent of the occupier or under the authority of a search warrant issued under section 73 .

(2)  The inquiry officer referred to in subsection (1) must as soon as reasonably practicable after entering any premises produce the written notice of authorisation and show it to the person apparently in charge of the premises or any other person on request.