R v Snounou (No 1)

The case of R v Snounou (No 1) involved the respondent, Snounou, who was facing charges relating to the importation of border-controlled precursors. The dispute centred on the admissibility of expert opinion evidence concerning the accuracy of presumptive testing results. The matter was heard in the relevant Australian court.

The central legal issues addressed by the court were whether the opinion evidence from a forensic chemist regarding the accuracy of the presumptive testing was admissible under section 79(1) of the Evidence Act, and whether the absence of confirmatory tests and the destruction of the chemical sample used in the presumptive testing impacted the admissibility of the evidence. Additionally, the court considered the opinion of the defence expert that a false positive result was still possible.

In determining the admissibility of the expert opinion evidence, the court examined the provisions of section 79(1) of the Evidence Act, which allows for the admission of opinion evidence based on specialised knowledge. The court found that the opinion evidence did not fall within the exception provided by the statute. Furthermore, the court noted that even if the opinion evidence were considered admissible under section 79(1), it would be rejected under section 137 of the Evidence Act due to the unreliability of the evidence. The court held that the absence of confirmatory tests and the destruction of the chemical sample significantly undermined the reliability of the presumptive testing results. Consequently, the court ruled that the evidence was inadmissible.

The court's final orders, as indicated at paragraphs [132] to [135], were that the evidence was inadmissible under section 79(1) of the Evidence Act. If the court had viewed the evidence as admissible under that section, it would have rejected it under section 137 of the Evidence Act.