Related Rule
Seychelles
Practice Relating to Rule 158. Prosecution of War Crimes
The Geneva Conventions Act (1985) of the Seychelles provides:
(1) Any person, whatever his nationality, who, whether in or outside Seychelles, commits, or aids, abets or procures the commission by another person of, any such grave breach of any of the [1949 Geneva] Conventions … is guilty of an offence and … shall on conviction [be punished].
(2) Where an offence under this section is committed outside Seychelles, a person may be proceeded against, charged, tried and punished therefor in any place in Seychelles, as if the offence had been committed in that place, and the offence is, for all purposes incidental to or consequential on the trial or punishment thereof, deemed to have been committed in that place. 
Seychelles, Geneva Conventions Act, 1985, Section 3(1) and (2).