Finlayson, Ex parte- Re Finlayson

This matter came before Toohey J in chambers, concerning an application by Finlayson for a writ of habeas corpus. The applicant sought to challenge the legality of his detention, which arose from an order made by a magistrate under the *Immigration Act 1901* (Cth). The core of the dispute involved the validity of the detention warrant and the circumstances under which it was issued.

The primary legal issue before the Court was whether the detention of Finlayson was lawful, specifically focusing on whether the magistrate had properly exercised their discretion in issuing the detention warrant. This required an examination of the procedural requirements and substantive grounds necessary for the magistrate to be satisfied that detention was warranted under the *Immigration Act 1901*.

Toohey J considered the provisions of the *Immigration Act 1901* relating to the detention of non-citizens. His Honour determined that the magistrate's decision to issue the warrant was based on insufficient evidence and a misapprehension of the relevant legal criteria. The Court found that the magistrate had not been properly satisfied of the grounds for detention as required by the Act, rendering the subsequent warrant and detention unlawful.

Consequently, Toohey J ordered that the writ of habeas corpus should issue, directing the release of Finlayson from detention.