State of New South Wales v Mackney (Final)

The case between the State of New South Wales and Mackney was heard in the Supreme Court. The defendant, Mackney, is a high-risk violent offender who had previously been the subject of an extended supervision order. The state sought to extend this order, arguing that Mackney still posed an unacceptable risk of committing serious offences if not kept under supervision. The dispute centred on the appropriate duration and conditions of the supervision order. The state argued for an indefinite extension, while Mackney's legal representatives contended for a more limited period.

The court was required to determine whether Mackney continued to pose a significant risk to public safety and, if so, what the appropriate conditions of the supervision order should be. The key issue was whether the state had proven on the balance of probabilities that Mackney still posed a high risk of committing serious offences if not subject to ongoing supervision. The court had to balance the need for public safety against Mackney's right to freedom from indefinite detention.

The Supreme Court found that the state had proven that Mackney remained a high-risk offender. The court considered evidence from psychologists, behavioural analysts, and other experts, as well as Mackney's criminal history and risk assessments. The court determined that an indefinite extension of the supervision order was necessary to protect public safety. The court found that the conditions proposed by the state were reasonable and proportionate to the risk posed by Mackney. The court concluded that the indefinite extension of the supervision order, with the proposed conditions, was the appropriate measure to manage the risk Mackney posed to the community.

The court ordered that an extended supervision order be made in respect of Mackney, effective immediately and continuing indefinitely, subject to the conditions specified in the order. The order included provisions for regular reporting, electronic monitoring, restrictions on contact with certain individuals, and other measures to ensure that Mackney remained under effective supervision. The court also ordered that Mackney be provided with access to necessary mental health and rehabilitation services to assist in managing his risk factors.