II. Specific provisions
B. Judicial assistance; procedural provisions
Article 18
Questioning of suspects pursuant to requests from the International Criminal Court
(1) Persons questioned pursuant to a request from the International Criminal Court on suspicion of having committed a crime within its jurisdiction shall, prior thereto, be informed of the crime they are suspected of and of their right to:
(c) be questioned in the presence of counsel, unless they waive this right expressly and voluntarily.
Rights during investigation - questioned in presence of counsel
EDIT.