New Mexico’s Supreme Court has fined a lawyer $5,000 for using AI-generated false testimony in a murder case appeal, according to Reuters. The court criticised Stephen Aarons for relying on AI without verifying the truthfulness of his claims, including fabricated witnesses and misleading descriptions of the shooter’s appearance.

During an August hearing, Aarons admitted to using AI without understanding the risks. Justice C. Shannon Bacon asked, “Counsel, do you watch the news? Do you listen to the radio? Do you read anything about what’s going on in the world?” Bacon’s question highlights the increasing risks of relying on AI for legal work.

The incident is part of a growing trend where courts have discovered AI-generated misquotes and false legal citations. Last year, a judge penalised two law firms for submitting a brief with numerous inaccuracies, while lawyers for MyPillow’s Mike Lindell were also fined for AI-generated misquotes.

Aarons expressed remorse, stating, “I am remorseful but hopeful that the disciplinary board takes into account it was an honest mistake.” The case underscores the need for lawyers to be vigilant and for the public to stay informed about the evolving risks of AI in legal proceedings.