Garlett v The State of Western Australia & Anor

The High Court of Australia considered an appeal by Mr. Garlett against the State of Western Australia and another party. The dispute concerned the admissibility of evidence obtained through a search of Mr. Garlett's property, which he alleged was conducted unlawfully. The core of the matter revolved around whether the search warrant used by the police was validly issued and executed.

The High Court was required to determine whether the search warrant was invalid due to a failure to comply with the requirements of the *Criminal Investigation Act 2006* (WA) and, if so, whether the evidence obtained as a result of that search should have been excluded under section 138 of the *Evidence Act 1995* (Cth). This involved an examination of the statutory preconditions for the issue of a search warrant and the principles governing the exclusion of improperly or illegally obtained evidence.

The Court reasoned that the search warrant was invalid because the issuing officer had not been satisfied of the grounds for issuing the warrant as required by the relevant legislation. Specifically, the officer had failed to properly consider the information presented to them before authorising the search. Consequently, the evidence obtained was unlawfully obtained. Applying the principles of statutory interpretation and the law relating to the exclusion of evidence, the High Court held that the admission of the unlawfully obtained evidence would have had an adverse effect on the fairness of the trial that outweighed any public interest in its admission.

The High Court allowed the appeal, quashed Mr. Garlett's conviction, and ordered a new trial.