Behrooz v Secretary, Department of Immigration and Multicultural and Indigenous Affairs

The appellant, Mr Mahran Behrooz, an unlawful non-citizen, was charged with escaping from immigration detention contrary to s 197A of the *Migration Act 1958* (Cth). He sought to rely on a defence that the conditions at the Woomera Immigration Reception and Processing Centre, where he was held, were so harsh and intolerable that his departure did not constitute an escape from "immigration detention" as defined by the Act. To support this defence, he sought witness summonses for documents relating to the conditions at the centre and complaints made about them. The High Court of Australia considered an appeal concerning the admissibility of evidence regarding detention conditions and the interpretation of "immigration detention" under the Act.

The central legal issues before the High Court were whether the conditions of detention could render the detention itself unlawful, thereby negating the offence of escape, and whether the *Migration Act 1958* authorised detention under harsh or inhumane conditions. The court was required to determine if the Act only permitted detention that was reasonably necessary for migration control purposes, and if detention in harsher conditions would be punitive and thus require the exercise of judicial power under Chapter III of the Constitution. Furthermore, the court considered the relevance of potential civil, criminal, or administrative remedies, constitutional principles, and international law to the construction of the statutory offence.

The High Court reasoned that a critical distinction exists between the lawful authority to detain a person and the means by which that detention is achieved and enforced, including the conditions of detention. The definition of "immigration detention" in s 5(1) of the *Migration Act 1958* is broad and encompasses various forms of restraint and locations, such as being held in a detention centre, prison, or on a vessel. The court held that the Act does not contemplate that detention ceases to be "immigration detention" merely because the conditions are harsh or intolerable. The availability of other remedies, such as civil or administrative actions, does not alter the statutory definition of immigration detention or the scope of the offence of escape.

The appeal was dismissed, and the appellant was ordered to pay the costs of the first respondent.