An Act to provide for the detention, prosecution and punishment of persons for genocide, crimes against humanity, war crimes and other crimes under international law.
10. (1) The following procedure shall be followed at a trial before a Tribunal, namely:-
(h) the Tribunal may, in order to discover or obtain proof of relevant facts, ask any witness any question it pleases, in any form and at any time about any fact; and may order production of any document or thing or summon any witness, and neither the prosecution nor the defence shall be entitled either to make any objection to any such question or order or, without the leave of the Tribunal, to cross-examine any witness upon any answer given in reply to any such question;
Procedure for witness testimony - national proceedings
EDIT.