New Zealand Case Law: Decisions & Judgments

Topic

Mental impairment mitigation

Legal area

Court

15 Mar 2023

R v NGAWHIKA [2023] NZHC 520

Citation

[2023] NZHC 520
Court

High Court

Starting point set at three years and six months' imprisonment based on the deliberate but isolated nature of the killing; a 30% discount for severe psychotic illness, a 10% discount for disadvantaged traumatic background, and a 5% discount for remorse/confession reduced the sentence by 45% to approximately 24 months; recognising statutory preference for least restrictive appropriate outcome and the defendant's substantial rehabilitative progress at He Korowai, the court converted the two-year short-term sentence to 12 months' home detention with standard conditions commencing the following d…
17 Nov 2022

DAVIS v POLICE [2022] NZHC 3019

Citation

[2022] NZHC 3019
Court

High Court

The District Court erred by failing to identify and order the mandatory non-release consequence under s 86C(4) for the injuring with intent offence; on appeal the sentence was quashed and substituted to reflect what the sentencing Judge would have imposed while preserving the actual period the offender would serve (6 months for injuring with intent with non-release order, and 9 months concurrent on remaining charges cumulative on the lead sentence), with appropriate discounts for guilty pleas and mental impairment and imposition of post-release conditions and a protection order.
3 May 2022

R v LAMBERT [2022] NZHC 924

Citation

[2022] NZHC 924
Court

High Court

Court fixed a global starting point of 20 years' imprisonment reflecting placement in Taueki band three and multiple severe aggravating features; applied a 10% reduction for mental impairment (insufficiently causative to warrant larger discount) and full 25% guilty plea discount, yielding a total 35% reduction and an end sentence of 13 years' imprisonment; imposed sentences for four attempted murder charges to be served concurrently; imposed a minimum period of imprisonment of 50% (6.5 years); imposed publication prohibition relating to victims' mental health material and CCTV footage.
15 Apr 2021

HUKEHUKE v R [2021] NZHC 817

Citation

[2021] NZHC 817
Court

High Court

The High Court rejected the appeal and upheld the sentence as not manifestly excessive: although the District Court judge erred by omitting a discrete allowance for restrictive bail conditions, that error did not produce an unjust sentence because the offending was sufficiently serious (Taueki banding supported a higher starting point) and the final sentence fell within the permissible range; therefore the six years five months' imprisonment was upheld.
5 Feb 2019

R v HANARA (SENTENCING NOTES) [2019] NZHC 78

Citation

[2019] NZHC 78
Court

High Court

The presumption in favour of life imprisonment was not displaced: the murder was brutal and premeditated (stabbing a retreating victim multiple times and kicking him as he bled to death) and the offender's youth and documented cognitive impairments did not have the necessary causal connection or magnitude to render life imprisonment manifestly unjust; however those mitigating factors justified setting the statutory minimum MPI at the 10‑year floor; concurrent short term imposed for burglary.
5 Oct 2018

R v NUKU [2018] NZHC 2609

Citation

[2018] NZHC 2609
Court

High Court

The lead offence of wounding with intent warranted a nine‑year starting point at the upper end of band two due to use of a lethal firearm, serious long‑term injury and moderate premeditation; uplift of three months for additional police charges and three months for relevant prior violent convictions; two months discount for demonstrated rehabilitation engagement; a 25% discount for an early guilty plea yields an effective custodial sentence of seven years; mental impairment did not justify a discrete mitigation because causative impact on culpability was not established; no minimum period of…
20 Dec 2017

CAMPBELL v R [2017] NZCA 623

Citation

[2017] NZCA 623
Court

Court of Appeal

The Court admitted fresh psychiatric evidence, found the appellant suffered chronic paranoid schizophrenia that significantly contributed to the offending and reduced his culpability, applied a 25% discount (nine months) to the three-year starting point while retaining a three-month uplift for prior convictions, and substituted a sentence of two years and six months' imprisonment for the original three years and three months.

New Zealand Case Law

R v NGAWHIKA [2023] NZHC 520

DAVIS v POLICE [2022] NZHC 3019

R v LAMBERT [2022] NZHC 924

HUKEHUKE v R [2021] NZHC 817

R v HANARA (SENTENCING NOTES) [2019] NZHC 78

R v NUKU [2018] NZHC 2609

CAMPBELL v R [2017] NZCA 623