New Mexico Supreme Court sanctions lawyer for AI‑generated brief with fabricated testimony
A New Mexico criminal‑defense attorney, Stephen Aarons, was held in direct contempt after filing an appellate brief that relied on ChatGPT‑generated content containing entirely fictitious witness statements and erroneous legal citations. Aarons admitted he never verified the facts or sources produced by the AI and failed to inform his client, Oscar Renee Sandoval, whose murder conviction the…
Key points
- Stephen Aarons submitted a brief with fabricated witness testimony generated by ChatGPT
- The New Mexico Supreme Court held him in direct contempt and referred him to a disciplinary board
- The case raises warnings about unverified AI use in legal filings
The court’s order highlighted the growing risk of unvetted AI output in legal practice, emphasizing the duty of lawyers to ensure accuracy and transparency. Aarons, a veteran with over four decades of experience, now faces potential sanctions and a review of his professional conduct, underscoring that reliance on generative AI does not excuse negligence or ethical breaches.
Legal experts warn that this case could set a precedent for how courts treat AI‑assisted filings, urging stricter verification protocols and clearer guidelines for attorneys using large language models in their work.
ChatGPT-using lawyer punished for citing fake testimony from made-up witnesses
Ars Technica AI · 11 September 2026
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This text was published by Ars Technica AI and written by Jon Brodkin. It is reproduced here with attribution so you can read it in full; the rights remain with the publisher. Read it at the source ↗
Coverage and discussion
3sources- Hacker News discussion · 6 pointsnews.ycombinator.com
- Lawyer fined $5K over AI-hallucinated witnesses in a murder casePress · The Verge AI ·
- New Mexico lawyer fined for using AI-generated brief containing fabricated police testimonyPress · The Guardian AI ·
The headline, key points and digest above were generated by Digest AI's editorial model from the linked sources. Automated summaries can contain errors: the sources are the record. Spotted a mistake? Tell us. Published by Martin K., who runs Digest AI and handles corrections.
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