§ 2. Crimes
Section 6
2. Anyone who, in the case of an armed conflict not of an international character, commits one of the following acts:
(d) treacherously killing or wounding individuals belonging to the hostile nation or army;
shall be liable to life imprisonment or a term of imprisonment not exceeding thirty years or a sixth category fine.

Article 8
War crimes
2. For the purpose of this Statute, "war crimes" means:
(e) Other serious violations of the laws and customs applicable in armed conflicts not of
an international character, within the established framework of international law, namely, any of
the following acts:
(ix) Killing or wounding treacherously a combatant adversary

This provision follows the ICC Statute.