Public interest certificates
(1) The Attorney - General of the Commonwealth or of a State, the Australian Capital Territory or the Northern Territory is a party to a proceeding in the Tribunal if:
(a) that Attorney - General gives a certificate under section 91 in relation to the proceeding; and
(b) the certificate does not specify a reason set out in paragraph 91(1)(a) or (b) or (2)(a); and
(c) that Attorney - General would not otherwise be a party to the proceeding.
Attorney - General intervening
(2) The Attorney - General of the Commonwealth or of a State, the Australian Capital Territory or the Northern Territory is taken to be a party to a proceeding in the Tribunal if that Attorney - General:
(a) informs the Tribunal under subsection 92(1) that the answering of a question at the hearing of the proceeding would be contrary to the public interest; and
(b) would not otherwise be a party to the proceeding.