Garlett v The State of Western Australia & Anor

The High Court of Australia considered the appeal of Mr Garlett against the State of Western Australia and the Commissioner of Police. Mr Garlett sought to challenge the validity of his conviction for the offence of aggravated robbery, which had been affirmed by the Court of Appeal of Western Australia. The central dispute concerned the admissibility of evidence obtained through a search of Mr Garlett's property.

The High Court was required to determine whether the search warrant used to seize the impugned evidence was lawfully issued. Specifically, the Court had to consider whether the information provided to the issuing officer in support of the warrant application was sufficient to establish reasonable suspicion that an offence had been, or was likely to be, committed, and that the items sought would be found at the premises. This involved an examination of the requirements for the issuance of search warrants under Western Australian legislation.

The Court reasoned that the information before the issuing officer did not establish a sufficient factual basis for reasonable suspicion. It was held that mere assertions or generalised information, without specific details linking the suspected offence to the premises to be searched, were insufficient to satisfy the statutory threshold. The Court applied the principle that a search warrant must be based on reasonable grounds, meaning there must be an objective basis for the suspicion, not merely a subjective belief. Consequently, the search warrant was found to be invalid, and the evidence obtained pursuant to it was deemed inadmissible.

The High Court allowed the appeal, quashed the conviction, and ordered that the conviction be set aside.