36 (b) any second or subsequent contravention of section 3, 4, 5, 7, 8 or 10, the maximum period of imprisonment prescribed by the section which is contravened. Savings 24. The provisions of this Chapter do not affect criminal liability in terms of the common law or any other legislation. CHAPTER 3 JURISDICTION Jurisdiction 25. (1) A court in the Republic trying an offence in terms of this Act has jurisdiction where— (a) the offence was committed in the Republic; (b) any act or omission in preparation for the offence or any part of the offence was committed in the Republic, or where any result of the offence has had an effect in the Republic; (c) the offence was committed in the Republic or outside the Republic by a South African citizen or a person with permanent residence in the Republic or by a person carrying on business in the Republic; or (d) the offence was committed on board any ship or aircraft registered in the Republic or on a voyage or flight to or from the Republic at the time that the offence was committed. (2) If the act or omission alleged to constitute an offence under this Act occurred outside the Republic, a court of the Republic, regardless of whether or not the