UN Security Council
1994

2. The International Tribunal for Rwanda shall have primacy over the national courts of all States. At any stage of the procedure, the International Tribunal for Rwanda may formally request national courts to defer to its competence in accordance with the present Statute and the Rules of Procedure and Evidence of the International Tribunal for Rwanda. /... S/RES/955 (1994) Page 7 Article 9 Non bis in idem 1. No person shall be tried before a national court for acts constituting serious violations of international humanitarian law under the present Statute, for which he or she has already been tried by the International Tribunal for Rwanda. 2. A person who has been tried by a national court for acts constituting serious violations of international humanitarian law may be subsequently tried by the International Tribunal for Rwanda only if: (a) The act for which he or she was tried was characterized as an ordinary crime; or (b) The national court proceedings were not impartial or independent, were designed to shield the accused from international criminal responsibility, or