Crimes Against Humanity and War Crimes Act 2000
8. A person who is alleged to have committed an offence under section 6 or 7 may
be prosecuted for that offence if
(a) at the time the offence is alleged to have been committed,
(i) the person was a Canadian citizen or was employed by Canada in a civilian or military capacity,
(ii) the person was a citizen of a state that was engaged in an armed conflict against Canada, or was employed in a civilian or military capacity by such a state,
(iii) the victim of the alleged offence was a Canadian citizen, or
(iv) the victim of the alleged offence was a citizen of a state that was allied with
Canada in an armed conflict; or
(b) after the time the offence is alleged to have been committed, the person is present in Canada.
Jurisdiction
Jurisdiction of custodial State or State where present
EDIT.