13. (9) The investigating authority shall-
(a) protect any complainant and witness from intimidation and reprisals during the course of investigations; and
(b) ensure their physical and psychological integrity before, during and after the proceedings.
1. States Parties shall, in accordance with the provisions of this Part and under procedures of national law, comply with requests by the Court to provide the following assistance in relation to investigations or prosecutions:
(j) The protection of victims and witnesses and the preservation of evidence;