Article (221)
The ascendants and descendants of the accused, as well as his relatives by blood or marriage up to the second degree and his spouse or former spouse may refuse to testify against him, unless the crime was committed against any one of them.
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;