Related Rule
Papua New Guinea
Practice Relating to Rule 158. Prosecution of War Crimes
Papua New Guinea’s Geneva Conventions Act (1976) provides:
(2) A person who, in Papua New Guinea or elsewhere, commits a grave breach of any of the Geneva Conventions is guilty of an offence.
(3) This section applies to persons regardless of their nationality or citizenship. 
Papua New Guinea, Geneva Conventions Act, 1976, Section 7(2) and (3).