Northern Territory Consolidated Acts(1) If:
(a) a person summoned to attend at an inquest as a witness declines to answer a question on the ground that his or her answer will criminate or tend to criminate him or her; and
(b) it appears to the coroner expedient for the purposes of justice that the person be compelled to answer the question;
the coroner may tell the person that, if the person answers the question and other questions that may be put to him or her, the coroner will grant the person a certificate under this section.
(2) A person who has been offered a certificate under subsection (1) is no longer entitled to refuse to answer questions on the ground that his or her answers will criminate or tend to criminate him or her and, when the person has given evidence, the coroner must give the person a certificate to the effect that the person was summoned to attend at an inquest as a witness, the person's evidence was required for the purposes of justice and the person gave evidence.
(3) Where a person is given a certificate under this section in respect of evidence given at an inquest, a statement by the person as part of that evidence in answer to a question is not admissible in evidence in criminal or civil proceedings, or in proceedings before a tribunal or person exercising powers and functions in a judicial manner, against the person other than on a prosecution for perjury.