Attorney-General for the State of Queensland v Cooper

In the matter of Attorney-General for the State of Queensland v Cooper, the court was presented with a case involving the sentencing of Colin James Cooper, a dangerous sexual offender, under the Dangerous Prisoners (Sexual Offenders) Act 2003 (Qld). The primary legal issues the court had to address were whether a supervision order under s 13(5)(b) of the Act could adequately protect the public against the risk of Cooper committing a serious sexual offence and whether he should be detained in custody for an indefinite term pursuant to an order under s 13(5)(a) of the Act. The court was required to consider psychiatric evidence, the risk of reoffending, and the adequacy of supervision orders in comparison to indefinite detention.

The court considered the evidence provided by three psychiatrists, who unanimously concluded that Cooper had a mixed personality disorder with antisocial and narcissistic traits, along with psychopathy. They highlighted that Cooper exhibited a longstanding pattern of disregarding and violating the rights of others, with extensive criminality, impulsivity, aggressiveness, irresponsibility, reckless behaviour, and a lack of remorse. They also concluded that Cooper was at high risk of reoffending sexually if released without supervision, with the most relevant risk factors being his antisocial/psychopathic personality and substance use. The court found the psychiatric evidence to be cogent and was satisfied to a high degree of probability that Cooper presented an unacceptable risk of committing serious sexual offences if released without an order.

The court determined that the risk of reoffending was not merely a matter for psychiatric opinion but a judicial determination requiring a value judgment as to what risk should be accepted against the serious alternative of the deprivation of a person’s liberty. The court concluded that the risk of reoffending in the commission of a serious sexual offence could not be reasonably and practicably managed by a supervision order, given the extraordinary range of prior offending behaviour and the difficulty in predicting Cooper's behaviour upon release. Therefore, the court exercised its discretion under s 13(1) of the Act to make a continuing detention order.

In conclusion, the court made an order under s 13(5)(a) of the Dangerous Prisoners (Sexual Offenders) Act 2003 that Colin James Cooper be detained in custody for an indefinite term for control, care, or treatment. The court found that this was necessary to adequately protect the community from the unacceptable risk that Cooper would commit serious sexual offences if released without such an order.