When AI Put Made-Up Law Into Court Papers
generative AI
Software that creates new text from a request.
habeas corpus petition
A court request asking for a jailed person to be released.
sanction
A penalty ordered by a court.
What happened
In California’s Nevada County, the District Attorney’s Office used generative AI. The office prosecutes crimes for the government. Prosecutors used the tool for about two months last fall. They used it to draft or proofread criminal court filings.
The office acknowledged errors in four felony cases. Some filings contained invented legal citations. Others included false statements or descriptions of law that did not match real cases. One matter involved a habeas corpus petition, a request to release a jailed person.
A California appeals court appointed a judge to examine what happened. The judge will also consider whether District Attorney Jesse Wilson’s office should face sanctions. This appointment begins an investigation. It does not mean that punishment has already been decided.
The background
Madison Maxwell, a former deputy prosecutor, described the events in a sworn declaration. She said her supervisor encouraged staff to use AI without a written policy or training. She also said her supervisor stopped her from quickly reporting the mistakes to the court, defense lawyers, and defendants.
Those are Maxwell’s claims. The court is still examining them. Maxwell supervised three of the four affected cases. She left the office in May 2026. The office said it audited about eighteen months of filings. It said the audit found no wider pattern of AI-related errors beyond the four cases. The full audit has not been publicly released, as far as current reporting shows.
Why it matters
A court filing is part of the argument presented to a judge. A legal citation tells readers where a claimed rule or decision comes from. If the cited case does not exist, the judge and the opposing side cannot check the argument.
That problem is especially serious in criminal cases. One of the filings involved a request to release someone from jail. Errors in such a document can affect how a court thinks about a person’s freedom. Prosecutors also use government authority, so they are expected to meet strict professional duties.
The lesson is not that every AI-assisted document is false. It is that AI assistance does not replace checking. A fluent sentence can still contain a false fact or a nonexistent case. People remain responsible for the material they submit.
What is confirmed
The prosecutor’s office has acknowledged that four felony cases contained errors linked to its use of generative AI. In January 2026, the California Supreme Court directed the appeals court to look more closely at the mistakes and their possible effect on cases. It also reversed a lower-court decision that would have shielded the office from possible sanctions.
The Nevada County Public Defender’s Office and Civil Rights Corps asked for a deeper inquiry. More than twenty AI experts also urged the appeals court to investigate further. These requests show the dispute has grown beyond one document. They do not prove that every allegation has been established.
What remains unknown
The public record does not yet show the full wording of every false citation or statement. It is also unclear when each defendant and defense lawyer learned about the mistakes. The effect on the outcomes of the four cases has not been settled. The court has not decided whether to sanction the office or anyone involved.
What to watch next
The appointed judge’s review is the next major step. The court may clarify what was submitted, who knew about it, and how the filings were checked. It may also address whether affected defendants need corrected records or other relief.
Another point to watch is the office’s response. Written rules, staff training, and required checks could determine whether similar errors are caught before filing.
Further details are available in CalMatters’ report and Civil Rights Corps’ public filing summary.
AI Put False Court Cases Into Legal Papers
📰 Full story: When AI Put Made-Up Law Into Court Papers
A prosecutor’s AI-made text included court cases that did not exist.
generative AI
A computer tool that creates new text from instructions.
legal citation
A reference to a law or court decision.
felony
A serious crime under the law.
💡 The gist
- Four criminal cases had mistakes in court papers.
- Some papers named court cases that did not exist.
- A judge will examine what happened.
In California, the Nevada County District Attorney’s Office used generative AI. The office prosecutes crimes for the government. Generative AI is a tool that creates text from instructions.
Last fall, prosecutors used it for about two months. They drafted and checked papers for criminal cases. The office said four felony cases had mistakes. A felony is a serious crime under law.
Some papers named court cases that did not exist. Other parts described facts or laws incorrectly. One paper asked to release a jailed man. A legal citation is a reference to a law or court decision. It helps a judge check an argument. A fake citation cannot be checked.
A court paper can affect someone’s freedom. That makes these mistakes more serious than an ordinary writing error. AI text may sound smooth, but smooth writing does not prove truth. People must check important claims before filing papers.
Madison Maxwell is a former prosecutor from the office. She said her supervisor encouraged AI without rules or training. She also said quick reporting of the mistakes was blocked. Those claims are still part of the investigation.
Maxwell worked on three of the four cases. She left the office in May 2026. The office said an eighteen-month audit found no wider AI pattern. The audit’s full results are not public.
In January, the California Supreme Court ordered a deeper review. The appeals court then appointed a judge to investigate. The judge will consider possible sanctions against the office. A sanction is a court-ordered penalty. No sanction has been decided.
Public defenders, a civil rights group, and more than twenty AI experts requested closer review. The case may shape rules for AI in legal work. For now, the clear lesson is simple. AI may help write, but people must check important claims.
AI Wrote a Court Story That Was Not Real
📰 Full story: When AI Put Made-Up Law Into Court Papers
A computer helped write court papers, but some words were wrong.
generative AI
A computer tool that makes new sentences.
investigate
To look carefully for answers.
The Nevada County District Attorney’s Office in California is a team of lawyers. They used generative AI, a computer tool that makes sentences.
The tool wrote things that were not true. It even named court cases that did not exist. Four serious criminal cases had mistakes.
One paper asked to free a person from jail. A judge might read that paper. So true words matter very much.
A court chose another judge to investigate. Investigate means look carefully for answers. No punishment has been decided.
Madison Maxwell, a former prosecutor, said her supervisor stopped quick reporting. That claim is still being checked.
AI can help adults write. Adults must check the words before sending them to court.