R v Seller; R v McCarthy

In the case of R v Seller; R v McCarthy, the appellants challenged the admissibility of evidence obtained from their examinations under the Australian Crime Commission Act 2002 (Cth). They argued that the admissibility of this evidence violated their right to a fair trial under the Constitution. The appellants were facing charges of conspiracy to dishonestly influence the Commissioner of Taxation, contrary to section 135.4(7) of the Criminal Code Act 1995 (Cth). The primary issue before the court was whether the appellants' constitutional right to a fair trial was compromised by the admissibility of the evidence obtained from their examinations.

The court considered whether the non-publication direction issued under section 30 of the Australian Crime Commission Act 2002 (Cth) was effectively enforced. Transcripts of the examinations, which contained factual matters central to the criminal charge, were provided to the Crown prosecutor contrary to the direction. Although the solicitor for the Crown prosecutor did not read the transcripts, the principal Australian Taxation Office investigator attended the examinations, read the transcripts, and was a significant and central witness at the future trial. The court had to determine if there was a real risk that relevant information from the Australian Crime Commission was communicated to the prosecution, and if so, whether a fair trial was possible.

The court concluded that there was a real risk that relevant information from the Australian Crime Commission was communicated to the prosecution, which could prejudice the appellants' right to a fair trial. Given the central role of the principal investigator, the court found that the admissibility of the evidence obtained from the examinations would compromise the appellants' right to a fair trial. Therefore, the court granted a permanent stay of the proceedings, ruling that the appellants' constitutional rights were at stake. The court's decision ensured that the appellants' right to a fair trial was upheld, despite the evidential advantages that the prosecution might gain from the examination transcripts.