R v Johnson

Lachlan Alexander Johnson was convicted for the manslaughter of Mitchell Craig Mosen and pleaded guilty to the unlawful possession of a prohibited firearm. The High Court of New Zealand was tasked with determining an appropriate sentence for Johnson's actions. The primary legal issues involved establishing a suitable starting point for the manslaughter charge, assessing the aggravating and mitigating factors, and determining the appropriate sentence for the firearm charge. The court considered the premeditation, serious injury, use of a weapon, and home invasion as aggravating factors. Conversely, the provocative conduct of the victim was recognised as a mitigating factor, albeit partially reducing the defendant's culpability.

The court adopted an eight and a half year starting point for the manslaughter charge, adjusting it by six months for the mitigating factor of provocation. The court also considered personal circumstances, granting a 25% discount for Johnson's early and consistent indication to plead guilty, and a 5% discount for his expressed remorse. These adjustments brought the final sentence for manslaughter to six years' imprisonment. For the unlawful possession of a firearm, the court imposed a six-month sentence to be served concurrently with the manslaughter sentence. The court also ordered the destruction of Johnson's firearm and the ammunition retained by the police.