Part II – International Crimes and Offences Against The Administration of Justice
General Principles of Criminal Law
19. General principles of criminal law.
(1) For the purposes of proceedings for an offence against section 7 or section 8 or section 9 –
(a) the following provisions of the Statute apply, with any necessary modifications –
(v) article 26 (which relates to the exclusion of jurisdiction over persons under 18 years);
Age of criminal responsibility - national proceedings
EDIT.