US lawyer cites fake witnesses in murder case, blames ChatGPT

A defense lawyer appealing his client's murder conviction submitted a brief containing made-up police testimony and witnesses fabricated by OpenAI's ChatGPT, New Mexico's highest court has said. The New Mexico Supreme Court in the United States on Wednesday fined the lawyer, Stephen Aarons, and held him in contempt for failing to verify the accuracy of the court filing, which Aarons said he prepared with help from the artificial intelligence (AI) programme. The panel also said Aarons had "demonstrated a lack of remorse and a lack of concern for his client". The justices fined Aarons $5,000 and said they will refer him to an attorney disciplinary board for investigation. Aarons, in a statement to the Reuters news agency, said he had used ChatGPT to summarise the trial proceedings when he agreed to take up the defendant's appeal last year, and did not understand the degree to which AI could "hallucinate" facts.