3. In this Act—“ approved authority” means—
(a) the Commissioner of Police;
(b) a Commissioner (however designated) of the police force of a State or another Territory;
(c) the Chairperson of the National Crime Authority; or
(d) an authority or body of the Commonwealth, a State or another Territory that—
(i) is authorised to conduct inquiries or investigations in relation to conduct that constitutes, or is alleged to constitute, criminal conduct, misconduct or corruption; and
(ii) is declared by the Minister by notice published in the Gazette to be an approved authority for the purposes of this Act;
(a) makes provision for the protection of witnesses; and
(b) is declared by the Minister by notice published in the Gazette to be a complementary witness protection law;
(a) a person who has given, or agreed to give, evidence on behalf of the Crown in the right of the Territory in—
(i) proceedings for an offence; or
(ii) hearings or proceedings before an authority that is declared by the Minister by notice published in the Gazette to be an authority to which this paragraph applies;
(b) a person who has given, or agreed to give, evidence otherwise than as mentioned in paragraph (a) in relation to the commission or possible commission of an offence against a law of the Territory, the Commonwealth, a State or another Territory;
(c) a person who has made a statement to the Chief Police Officer, another police officer or an approved authority in relation to an offence against a law of the Territory, the Commonwealth, a State or another Territory;
(d) a person who, for any other reason, may require protection or other assistance under this Act; or
(e) a person who, because of his or her relationship to, or association with, a person referred to in paragraph (a), (b), (c) or (d) may require protection or other assistance under the witness protection program;