Law Enforcement (Powers and Responsibilities) Act 2002 No 103
Current version for 1 July 2020 to date (accessed 14 August 2020 at 12:50)
Part 9 Division 2 Section 121
121   Detention after arrest for purposes of investigation may count towards sentence
(cf Crimes Act 1900, s 356W)
In passing sentence on a person convicted of an offence, a court may take into account any period during which the person was detained under this Part in respect of the offence and may reduce the sentence it would otherwise have passed.