For the purposes of the law of defamation, the following proceedings, reports and communications shall be absolutely privileged:
(a) proceedings of an investigation referred to in section 33ANJ(1), or an inquiry under this Part, including any statement or submission made by or on behalf of any person in the proceedings;
(b) communications of an authorised officer or an inquiry member, within the meaning of Chapter 3, in relation to proceedings referred to in paragraph (a);
(c) an investigation report, whether in draft or final form, prepared under section 33ANK.