12 Crimes 2013, No. 10 9. Offences not to be punishable except under Samoan Acts - No one shall be convicted of any offence at common law, or of any offence against any Act of the Parliament of Samoa. PROVIDED THAT nothing in this section limits or affects the power of authority of the Legislative Assembly or of any Court to punish for contempt. 10. Offence under more than one enactment-(1) Where an act or omission constitutes an offence under this Act and under any other Act, the offender may be prosecuted and punished either under this Act or under that other Act. (2) Where an act or omission constitutes an offence under two (2) or more Acts other than this Act, the offender may be prosecuted and punished under any one of those Acts. (3) Where an act or omission constitutes an offence under two (2) or more provisions of this Act or of any other Act, the offender may be prosecuted under any one of those provisions. (4) No one shall be liable to be punished twice in respect of the same offence. (5) Nothing in this Act shall take away or diminish any authority given by any other enactment to arrest, detain, or put any restraint on any person. PART III MATTERS OF JUSTIFICATION OR EXCUSE 11. General rule as to justifications-(1) All rules and principles of the common law as are consistent with the provisions of this Act and any other applicable enactment and with the customs and usages of the people of Samoa recognised and applied by the Court of Appeal, the Supreme Court or the District Court which provides a justification or excuse for any act or omission, or a defence to any crime under this Act or any other enactment shall be applicable to any charge, except so far as they are altered by or are inconsistent with this Act or any other enactment.