AI Hallucinations Lead to Indefinite Suspension of Nebraska Lawyer Over Fake Citations
AI-related courtroom missteps have escalated from embarrassment to serious professional consequences, as the Nebraska Supreme Court suspended Omaha attorney Greg Lake indefinitely. The ruling followed the discovery that a divorce appeal brief he filed contained 57 defective citations out of 63, including 20 entirely fabricated references and four cases that do not exist in any jurisdiction.
What Happened
Lake initially told the court he had mistakenly submitted the wrong version of the brief while traveling during his wedding anniversary with a malfunctioning computer. However, he later admitted to using artificial intelligence tools in drafting the document. Investigators from the Nebraska Counsel for Discipline concluded that his statements amounted to a lack of candor toward the court.
The case stemmed from a 2025 divorce dispute involving the timing of asset division and child custody. Lake, representing the husband, filed an appeal brief that mixed inaccurate interpretations of real Nebraska cases with entirely fabricated legal authorities.
Court’s Findings
In its opinion, the Nebraska Supreme Court emphasized that the errors “could have been easily discovered using traditional legal research services.” The justices described the matter as presenting a “novel issue” for the state and framed the ruling as a warning to attorneys about the risks of relying on AI without verification.
The issue first surfaced during oral arguments in February, when justices questioned citations that did not match any known case law. Subsequent proceedings confirmed that many references were AI-generated “hallucinations”—plausible but nonexistent legal citations.
A Growing Pattern
Legal researcher Damien Charlotin of HEC Paris has tracked more than 1,200 global cases involving AI-generated legal errors, including around 800 in the United States. He has noted the pace is accelerating, with multiple incidents occurring across different courts on the same day.
Other penalties have included significant financial sanctions. Courts in Oregon have imposed fines totaling over $100,000 in a single case, while the United States Court of Appeals for the Sixth Circuit fined two Tennessee attorneys $30,000. However, Nebraska’s decision to impose an indefinite suspension marks a notable escalation—from monetary penalties to a halt on legal practice.
Why It Matters
The case signals a turning point in how courts view AI use in professional settings. While acknowledging the benefits of emerging tools, the Nebraska Supreme Court stressed that they must be used “with caution and humility.”
For the broader AI ecosystem, such rulings help define expectations for responsible deployment in regulated industries. The legal sector—where accuracy is critical—may serve as an early indicator of how AI will be governed in fields like finance, healthcare, and public administration.
