{"meta":{"exportedAt":"2026-10-09T07:26:16.548Z","formatVersion":2,"selection":{"q":"hallucinated_citations","system":"","harm":"","context":"","country":"","role":"","relation":"","evidence":"","year":"2026","response":"","severity":"","verification":"","view":"incidents","sort":"added"},"totalIncidents":1,"coverage":{"cases":1,"countries":1,"languages":1,"unknownLocation":0,"locationPending":0,"unknownLanguage":0,"unknownDate":0,"lawsuits":0,"regulatory":1,"minors":0,"coreRelations":0,"contextualRelations":1,"mixedRelations":0,"unknownRelations":0,"relationPending":0,"relationUnknown":0},"countingNote":"Distinct public cases in this selection. People counts apply within individual cases only; cross-case person overlap has not been resolved. No population incidence estimate.","affectedCountNote":"Interpret person counts with affectedCountStatus and the reported effects. Unquantified zeros are placeholders, not a measured zero.","source":"AI incidents","publisher":"NOPE","url":"https://nope.net/incidents","license":"CC BY 4.0"},"incidents":[{"id":"2026-nebraska-supreme-court-strikes-self-represented-appellant-brief-over-ai-fabricated-citations","caseFacts":{"claims":[{"id":"c1","status":"documented","evidence":[{"locator":"'his brief contains numerous citations'; 'to fictitious cases and misstatements of law, which are the'; 'result of his admitted use of generative artificial intelligence'; 'In light of these deficiencies, we strike'","relation":"supports","source_id":"s1"}],"assertion":"The Nebraska Supreme Court found that the self-represented appellant's brief contained numerous citations to fictitious cases and misstatements of law resulting from his admitted use of generative artificial intelligence, and struck the brief.","causal_attribution":"Finding stated in the court's published opinion of 2 October 2026."},{"id":"c2","status":"documented","evidence":[{"locator":"'litigants are held to the same standard as practicing attorneys'; 'relies upon nonexistent legal authority is'; 'an abuse of the judicial process worthy of sanctions'; 'we will stop short of dismissing'; 'dismissal of the appeal in lieu of plain error review may follow'","relation":"supports","source_id":"s1"}],"assertion":"The court held that self-represented litigants are held to the same standard as attorneys and that submitting a brief relying on nonexistent legal authority is an abuse of the judicial process worthy of sanctions, but stopped short of dismissing the appeal and reviewed for plain error, warning that dismissal may follow in future cases.","causal_attribution":"Holding stated in the court's published opinion."},{"id":"c3","status":"documented","evidence":[{"locator":"'sanctioned him to serve a term of 90 days’ incarceration'; 'Finding no plain error, we affirm'; 'time to a period of 5 weeks and once again ordered that he pay'","relation":"supports","source_id":"s1"}],"assertion":"Reviewing for plain error only, the court found none and affirmed the district court's contempt finding and its sanction of 90 days' incarceration with purge conditions, a temporary reduction of parenting time and an attorney-fee award.","causal_attribution":"Disposition stated in the court's published opinion; the contempt arose from decree violations unrelated to AI."}],"effects":[{"label":"a self-represented appellant's brief was struck for AI-fabricated citations and his appeal was reviewed only for plain error","claim_id":"c1","direction":"negative"}],"sources":[{"id":"s1","url":"https://www.nebraska.gov/apps-courts-epub/public/viewOpinion?docId=N00013498PUB","kind":"court_record","access":"read","language":"en","translation_note":"Read in full in English by the research agent (an AI) on 2026-10-09 from the Nebraska Supreme Court Online Library PDF (text extracted with pdftotext); no translation was involved and no human reviewer read the opinion. HTTP 200.","independence_group":"nebraska-supreme-court-opinion-2026-10-02"}],"version":1,"ai_roles":["own_use"],"contexts":["justice","relationships"],"unknowns":["Which generative AI tool the appellant used and what it produced; the opinion records only his admission and the presence of fictitious citations.","Whether the appeal would have fared differently under full review; the court reviewed for plain error and found none.","Whether the appellant has served the incarceration sanction or purged it."],"geography":{"basis":"The appeal is from the District Court for Sarpy County, Nebraska, and the opinion is of the Nebraska Supreme Court (opinion caption and background). The appellant litigated the divorce in Nebraska; the opinion gives no other residence.","court_countries":["US"],"event_countries":["US"],"affected_person_countries":["US"]},"publication":{"basis":"Published as a consequential-response case on the court's own published opinion: the Nebraska Supreme Court struck a self-represented appellant's brief because its fabricated citations resulted from his admitted use of generative AI, reviewed only for plain error and affirmed the contempt order against him. The facts are documented by the opinion; the appellant is a private party in a family case and is not named in the public text.","reviewed_on":"2026-10-09"},"ai_involvement":{"basis":"The reported harm is the court's response to the appellant's use of generative AI: the Nebraska Supreme Court's published opinion states that his brief contained numerous citations to fictitious cases and misstatements of law 'which are the result of his admitted use of generative artificial intelligence (AI)', that the court struck the brief for that reason and reviewed only for plain error. The opinion does not identify the tool or quote its output. The AI-generated citations informed the court's decision about the appellant (informed_decision_about): the court read the brief, found its authorities fictitious, struck it on that ground and limited its review to plain error.","status":"supported"},"person_relations":["informed_decision_about"]},"name":"Nebraska Supreme Court strikes a self-represented appellant's brief over fabricated citations from admitted AI use; plain-error review only (2 Oct 2026)","summary":"On 2 October 2026 the Nebraska Supreme Court struck the appellate brief of a self-represented party appealing a contempt order in his divorce case because the brief contained numerous citations to fictitious cases and misstatements of law, which the court said were the result of his admitted use of generative artificial intelligence. The court held that self-represented litigants are held to the same standard as attorneys and that submitting a brief relying on nonexistent authority is an abuse of the judicial process worthy of sanctions. Citing the novelty of the issue for self-represented parties, it stopped short of dismissing the appeal and reviewed only for plain error, finding none and affirming the district court's contempt finding, its sanction of 90 days' incarceration with purge conditions, a temporary reduction of his parenting time and an attorney-fee award. The court warned that in future cases dismissal of the appeal may follow. The opinion does not name the AI tool.","incidentDate":"2026-10-02","incidentKind":"single_event","incidentDatePrecision":"day","exposurePattern":"single_interaction","reportedDate":"2026-10-02","aiSystem":"Generative artificial intelligence, not identified in the opinion, which the appellant admitted using to prepare an appellate brief that cited fictitious cases","aiProduct":"Unidentified legal research tool","severity":"low","verificationStatus":"credible","harmCategories":[],"harmOutcomes":["legal_harm"],"harmOutcomeSummary":"The appellant's brief was struck as a sanction for fabricated citations the court attributed to his admitted use of generative AI, so his appeal was reviewed only for plain error rather than on its assigned errors; the court affirmed the contempt order and 90-day incarceration sanction with purge conditions (Nebraska Supreme Court opinion, 2 October 2026). The opinion does not say whether the appeal would have succeeded under full review.","frameworkFacets":[],"causationStatus":"established","participantUsersAffectedMin":1,"otherPeopleHarmedMin":0,"affectedCountStatus":"exact","affectedCountEvidence":"One person: the self-represented appellant who used generative AI to prepare the brief and whose brief was struck. The opposing party and the children are not counted as harmed by the AI-related sanction.","victimAgeRange":"adult","jurisdiction":"US","platformType":"other","outcomeType":"regulatory_action","outcomeStatus":"resolved","primarySourceUrl":"https://www.nebraska.gov/apps-courts-epub/public/viewOpinion?docId=N00013498PUB","primarySourceLabel":"Nebraska Supreme Court opinion, 322 Neb. 451, No. S-25-546, filed 2 October 2026 (court PDF, docId N00013498PUB)","firstPublishedAt":"2026-10-09T03:29:04.754849+00:00","updatedAt":"2026-10-09T03:29:04.754849+00:00","scopeVersion":"facts-v3","tags":["hallucinated_citations","courts","self_represented_litigant","sanctions","united_states","nebraska"]}]}