Schedule 1—Amendment of the Criminal Code Act 1995
Chapter 8—Offences against humanity and related offences
Division 268—Genocide, crimes against humanity, war crimes and crimes against the administration of the justice of the International Criminal Court
Subdivision C—Crimes against humanity
268.9 Crime against humanity—extermination
(1) A person (the perpetrator) commits an offence if:
(a) the perpetrator causes the death of one or more persons; and
(b) the perpetrator’s conduct constitutes, or takes place as part of, a mass killing of members of a civilian population; and
(c) the perpetrator’s conduct is committed intentionally or knowingly as part of a widespread or systematic attack directed against a civilian population.
Penalty: Imprisonment for life.
National penalties - crimes against humanity
National penalties - life imprisonment
EDIT.