PART IV - GENERAL RULES AS TO CRIMINAL RESPONSIBILITY

20 Person not to be punished twice for same offence

A person cannot be punished twice either under the provision of this Code or under the provisions of any other law for the same act or omission, except in the case where the act or omission is such that by means thereof he causes the death of another person, in which case he may be convicted of the offence of which he is guilty by reason of causing such death, notwithstanding that he has already been convicted of some other offence constituted by the act or omission.

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.