PART I—PRELIMINARY
Offences Against Administration of Justice
16. Every person who, wrongfully and without lawful
authority—
(a) for the purpose of compelling another person to abstain from doing anything that the person has a lawful right to do; or
(b) to do anything that the person has a lawful right to abstain from doing, in relation to any proceedings of the ICC, causes the person reasonably, in all the circumstances, to fear for their safety or the safety of anyone known to the person is guilty of an offence and liable on conviction to imprisonment for a term of not more than five years.
Corruptly influencing a witness, obstructing or interfering with the attendance or testimony of a witness, retaliating against a witness for giving testimony or destroying, tampering with or interfering with the collection of evidence
Impeding, intimidating or corruptly influencing an official of the Court
EDIT.