Section 89 — Sentencing Act 2002: Imposition of minimum period of imprisonment

89 Imposition of minimum period of imprisonment (1) If a court sentences an offender to preventive detention, it must also order that the offender serve a minimum period of imprisonment, which in no case may be less than 5 years. (2) The minimum period of imprisonment imposed under this section must be the longer of— (a) the minimum period of imprisonment required to reflect the gravity of the offence; or (b) the minimum period of imprisonment required for the purposes of the safety of the community in the light of the offender's age and the risk posed by the offender to that safety at the time of sentencing. (3) For the purposes of Part 13 of the Crimes Act 1961 , an order under subsection (1) is a sentence.