CHAPTER IV
HUMAN RIGHTS

42. Arrest, detention and fair trial

(2) Every person arrested for, or accused of, the alleged commission of an offence shall, in addition to the rights which he or she has as a detained person, have the right —

(f) as an accused person, to a fair trial, which shall include the right —
(vii) not to be prosecuted again for a criminal act or omission of which he or she has previously been convicted or acquitted, save upon the order of a superior court in the course of an appeal or review proceedings relating to that conviction or acquittal ;

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.