Commonwealth v Hollis

The Commonwealth of Australia (the appellant) appealed to the High Court of Australia against a decision of the Supreme Court of New South Wales, which had granted a writ of habeas corpus to the respondent, Mr. Hollis. Mr. Hollis had been detained pursuant to a warrant issued under the *Migration Act 1958* (Cth). The core of the dispute concerned the validity of Mr. Hollis's detention and the legality of the warrant under which he was held.

The High Court was required to determine whether the warrant for Mr. Hollis's detention was validly issued under the *Migration Act 1958* (Cth), and consequently, whether his detention was lawful. Specifically, the Court had to consider the interpretation of the provisions of the Act relating to the detention of non-citizens and the circumstances under which such detention could be lawfully authorised.

The Court's reasoning focused on the statutory requirements for the issuance of a detention warrant. It was held that the warrant in question was defective because it did not comply with the mandatory requirements of the *Migration Act 1958* (Cth) concerning the information that must be contained within such a warrant. The Court applied the principle that statutory powers must be exercised strictly in accordance with the terms of the empowering legislation, and any failure to do so renders the exercise of that power invalid.

The High Court dismissed the appeal, upholding the Supreme Court's decision to grant the writ of habeas corpus. This meant that Mr. Hollis's detention was deemed unlawful, and he was ordered to be released.