New Mexico Lawyer Fined for AI-Generated False Testimony in Murder Appeal

The New Mexico Supreme Court recently took action against attorney Stephen Aarons, imposing a fine and holding him in contempt over a legal brief that included fabricated police testimony and nonexistent witnesses generated by OpenAI’s ChatGPT. In a ruling on Wednesday, the court found that Aarons failed to confirm the accuracy of the material submitted in his client’s murder appeal.

The high court’s decision followed revelation that the documents contained entirely fictitious testimony, raising concerns about the integrity of the legal process. Aarons was fined $5,000 and is set to face further review by an attorney disciplinary board due to his actions.

In a statement, Aarons explained that he had employed ChatGPT to summarize trial proceedings while taking on the appeal case for Oscar Renee Sandoval, who was convicted of murdering the mother of his children. Aarons admitted to underestimating the potential for the AI to “hallucinate” information. “I am remorseful but hopeful that the disciplinary board takes into account it was an honest mistake,” he expressed. “It is a lesson learned for all professionals who rely upon this powerful but sometimes unstable technology.”

This incident is part of a troubling trend, as courts across the country increasingly discipline lawyers for using AI tools to generate court documents without adequate verification. Reports have indicated that numerous attorneys have faced sanctions for submissions riddled with erroneous case citations or misrepresentations of the law. However, Aarons’ case stands out due to the inclusion of imaginary witnesses in a criminal appeal.

Aarons is currently appealing for Oscar Renee Sandoval, who has maintained his innocence. Sandoval was sentenced to life in prison last year. Following the court’s findings, the pending appeal has now been reassigned to Kim Chavez Cook, a public defender in New Mexico.

Questions arose during a hearing on August 21 regarding how the fabricated information appeared in Aarons’ brief. Justice Shannon Bacon questioned Aarons about his awareness of the ongoing discussions concerning AI’s limitations and its potential to generate falsehoods. “Do you watch the news? Do you listen to the radio?” Bacon asked, highlighting the prevalent stories surrounding AI misuses.

The New Mexico Supreme Court’s decision marks a pivotal moment as legal professionals grapple with the integration of artificial intelligence in their practices, emphasizing the need for diligence and responsibility in utilizing such technologies.