I. General Provisions
Article 8
Communications with the International Criminal Court and International Tribunals
(4) Requests from the International Criminal Court or an International Tribunal shall be in writing. Written requests from the International Criminal Court and the supporting material shall be submitted in German or accompanied by a certified translation into German. Requests and supporting material from an International Tribunal shall be accompanied by translations into English or French. Executions of requests from the International Criminal Court and photocopies for the purpose of deferral of a case to it do not require translation.
Language of requests for cooperation
EDIT.