CHAPTER 3. COOPERATION AS REFERRED TO IN ARTICLE 93 OF THE STATUTE
ยง 2. Actions of the public prosecutor and the investigating judge
Section 50
1. The public prosecutor shall transmit the request for cooperation to the investigating judge if it involves:
(a) questioning persons who are not prepared to appear voluntarily and give the requested testimony;
Questioning of persons - authority - ICC proceedings
Examination of witnesses - authority - ICC proceedings
EDIT.