The Supreme Court has ruled that a trial judge may, in exceptional circumstances, decline to accept a guilty plea and require a jury to consider whether an accused was sane when the alleged offence occurred.
The Court answered a question referred by a Circuit Court judge in a case concerning Sean Redmond, who had pleaded guilty to causing serious harm. The judgment, delivered by Denham J on 6 April 2006, said the judge could enter a not guilty plea on his behalf and ensure that the issue of sanity was fully investigated at trial.
The charge arose from an alleged knife attack on 20 November 2002 near St Mary’s Psychiatric Hospital in Castlebar. The Circuit Court’s account said the victim suffered serious injuries and that Redmond, who had a psychiatric history, told hospital staff he had stabbed someone. It also recorded that he had reportedly told a psychiatrist he acted after hearing voices. These were facts recited in the case stated; the Supreme Court did not decide the criminal charge.
Redmond pleaded guilty in July 2003. At a later sentencing hearing, the trial judge said he had substantial grounds to believe Redmond may have been legally insane at the time of the alleged acts. The judge had also been informed that Redmond preferred a definite prison sentence to the possibility of indefinite detention in a mental institution. The judgment noted that Redmond was considered fit to plead at the time of the case stated.
The prosecution, the accused and the Attorney General made submissions on the judge’s authority. The accused’s side argued that he was entitled to choose his plea and that the court should not go behind it. The Attorney General and prosecution submitted that the court had powers to protect fair procedures and the integrity of the process.
The Supreme Court said an accused generally has the right to choose whether to plead guilty, but that right is not absolute. A court retains an inherent discretion—and in appropriate circumstances a duty—to protect due process. The Court considered the circumstances exceptional because the judge had substantial grounds to believe the accused may have lacked the mental element required for the crime, while the plea was reportedly motivated by a wish to avoid potentially indefinite psychiatric detention.
The ruling answered the legal question in the affirmative. It held that the trial judge was entitled to decline the plea, enter a not guilty plea and have a jury investigate sanity at the time of the alleged acts. The Supreme Court did not itself vacate the plea, direct a jury verdict, determine whether Redmond was insane, or decide the charge. It acknowledged that a finding of not guilty by reason of insanity could lead to detention in a medical institution for as long as treatment was considered necessary, potentially for an indefinite period.