PART II
PUNISHMENT OF OFFENDERS AGAINST CONVENTIONS
Grave breaches of scheduled Conventions
3. (2) In the case of an offence under this section committed outside Singapore, a person may be proceeded against, charged, tried and punished therefor in any place in Singapore as if the offence had been committed in that place, and the offence shall, for all purposes incidental to or consequential on the trial or punishment thereof, be deemed to have been committed in that place.
Jurisdiction
Universal jurisdiction
EDIT.