Part 7
Miscellaneous

57 Attorney-General may decline to comply with request in certain cases

The Attorney-General may decline to comply with a request to which section 21, 29, 30, 31, 35, or 41 applies where, in the Attorney-General's opinion,—

(b) the request relates to the prosecution of a person for an offence in a case where the person has been tried by a national court or authority, whether in New Zealand or elsewhere, in respect of that offence or for another offence constituted by the same act or omission except where the Tribunal is exercising jurisdiction because

(i) the act or omission for which the person has been tried was characterised as an ordinary offence under the law of the country where the trial took place ; or

(ii) the proceedings in the national court or authority were—
(A) not impartial or independent ; or
(B) designed to shield the person from inter-national criminal responsibility ; or
(C) not diligently prosecuted.

Article 20
Ne bis in idem
1. Except as provided in this Statute, no person shall be tried before the Court with respect to conduct which formed the basis of crimes for which the person has been convicted or acquitted by the Court.
2. No person shall be tried by another court for a crime referred to in article 5 for which that person has already been convicted or acquitted by the Court.
3. No person who has been tried by another court for conduct also proscribed under article 6, 7 or 8 shall be tried by the Court with respect to the same conduct unless the proceedings in the other court:
(a) Were for the purpose of shielding the person concerned from criminal responsibility for crimes within the jurisdiction of the Court; or
(b) Otherwise were not conducted independently or impartially in accordance with the norms of due process recognized by international law and were conducted in a manner which, in the circumstances, was inconsistent with an intent to bring the person concerned to justice.