31.—(1) A person who has in the person's possession or power a document, or information in any form, relating to any matter within a commission's terms of reference shall preserve that document or information—

(a) until the commission is dissolved under section 43(1), or

(b) if the commission is dissolved under section 44(1), until the tribunal established to inquire into the matter that was within the commission's terms of reference has completed its inquiry.

(2) A person who contravenes subsection (1) is guilty of an offence.