R v Rasmussen

Thor Rasmussen is charged with the murder of Heath Craig McPhillips on 4 November 2015 at Semaphore, contrary to s 11 of the Criminal Law Consolidation Act 1935 (SA) ("the CLCA"). Rasmussen pleaded not guilty and raised the defence of mental incompetence. The court had to determine whether Rasmussen suffered a mental impairment and whether he was mentally incompetent at the time of the alleged offence. Two psychiatrists concluded that Rasmussen suffered from schizophrenia and was mentally incompetent at the time of the offence. A third psychiatrist, however, considered that Rasmussen suffered from depression and was mentally competent. The Director of Public Prosecutions maintained that Rasmussen had not established on the balance of probabilities that he was mentally incompetent at the time of the alleged offence.

The court preferred the evidence of the two psychiatrists over the third. The court held that Rasmussen suffered from a mental impairment, namely schizophrenia, and was mentally incompetent to commit the offence of murder. The court recorded this finding pursuant to s 269FA(3)(a) of the CLCA. The court's reasoning was based on Rasmussen's history of auditory hallucinations and delusional beliefs, which persisted even after his discharge from the Royal Adelaide Hospital. The court also considered Rasmussen's conduct during and after the alleged offence, which indicated that he knew his actions were wrong and had a measure of control over his conduct. The court's decision was influenced by the Director's submission that Rasmussen's report of auditory hallucinations during his second interview with Dr Furst should be treated with caution and scepticism. The court also considered Rasmussen's conduct during the alleged offence and following, by reference to the opinions provided by the psychiatrists. The court found that Rasmussen was feigning his symptoms and that his conduct was not consistent with mental incompetence. The court's decision was based on a careful consideration of the psychiatric evidence and Rasmussen's conduct.

The court's decision has significant implications for Rasmussen's criminal liability. If the court had found Rasmussen to be mentally incompetent, he would have been acquitted of the charge of murder and could have been subject to a mental health order. However, since the court found Rasmussen to be mentally competent, he remains criminally liable for the charge of murder. The court's decision also highlights the importance of a thorough and independent investigation into a defendant's mental competence. The court's decision was based on a careful consideration of the psychiatric evidence and Rasmussen's conduct, and it provides guidance for future cases involving the defence of mental incompetence.