United Kingdom of Great Britain and Northern Ireland
PART 5 Offences under Domestic Law
Northern Ireland
58 Genocide, crimes against humanity and war crimes
(1) It is an offence against the law of Northern Ireland for a person to commit genocide, a crime against humanity or a war crime.
(2) This section applies to acts committed—
(a) in Northern Ireland, or
(b) outside the United Kingdom by a United Kingdom national or a United Kingdom resident.
59 Conduct ancillary to genocide, etc. committed outside jurisdiction
(1) It is an offence against the law of Northern Ireland for a person to engage in conduct ancillary to an act to which this section applies.
(2) This section applies to an act that if committed in Northern Ireland would constitute—
(a) an offence under section 58 (genocide, crime against humanity or war crime), or
(b) an offence under this section,
but which, being committed (or intended to be committed) outside Northern Ireland, does not constitute such an offence.
(3) The reference in subsection (1) to conduct ancillary to such an act is to conduct that would constitute an ancillary offence in relation to that act if the act were committed in Northern Ireland.
(4) This section applies where the conduct in question consists of or includes an act committed—
(a) in Northern Ireland, or
(b) outside the United Kingdom by a United Kingdom national or a United Kingdom resident.
60 Trial and punishment of main offences
(1) The following provisions apply in relation to—
(a) offences under section 58 (genocide, crimes against humanity and war crimes),
(b) offences under section 59 (conduct ancillary to genocide, etc. committed outside jurisdiction), and
(c) offences ancillary to an offence within paragraph (a) or (b) above.
(2) The offence is triable only on indictment.
(3) Proceedings for an offence shall not be instituted except by or with the consent of the Attorney General for Northern Ireland.
(4) If the offence is not committed in Northern Ireland—
(a) proceedings may be taken, and
(b) the offence may for incidental purposes be treated as having been committed,
in any place in Northern Ireland.
(5) A person convicted of—
(a) an offence involving murder, or
(b) an offence ancillary to an offence involving murder,
shall be dealt with as for an offence of murder or, as the case may be, the corresponding ancillary offence in relation to murder.
In this subsection “murder” means the killing of a person in such circumstances as would, if committed in Northern Ireland, constitute murder.
(6) In any other case a person convicted of an offence is liable to imprisonment for a term not exceeding 30 years.
Crimes against humanity
Genocide
War crimes
EDIT.