The State of Western Australia v O'Kane

The State of Western Australia has appealed against the sentence imposed on the respondent, who was convicted of murdering his four-month-old son, Zach. The respondent was sentenced to life imprisonment with a minimum term of 18 years before he was eligible for parole. The appeal focuses on the adequacy of the minimum term. The respondent had a history of causing grievous bodily harm to another infant son and had been under significant stress at the time of the murder, which was the culmination of a period of physical abuse of Zach. The respondent did not have a mental condition that was causally related to the offence.

The court was required to determine whether the minimum term of 18 years was manifestly inadequate, and whether the sentencing judge was required to identify the aggravating factors taken into account. The court also had to consider whether the special hardship the offender would suffer in prison was a relevant factor in sentencing, and whether there was a need for evidence of such special hardship.

The court found that the minimum term of 18 years was manifestly inadequate, given the circumstances of the case. The court held that the sentencing judge was required to identify the aggravating factors taken into account, and that the special hardship the offender would suffer in prison was a relevant factor in sentencing. However, the court found that there was insufficient evidence of special hardship to warrant a reduction in the minimum term. The court also held that the respondent's previous offending was a significant aggravating factor.

The court varied the sentence by reducing the minimum term to 20 years. The respondent's conviction and sentence were otherwise upheld.