Nebraska Supreme Court strikes a self-represented appellant's brief over fabricated citations from admitted AI use; plain-error review only (2 Oct 2026)
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.
- AI system
- Unidentified legal research tool
- Occurred
- 2 Oct 2026
- Reported
- 2 October 2026
- Event location
- United States
- What the AI did
- Informed a human decision about the person
- Reported harm
- Legal Harm
- Whose AI use
- Their own AI use
- Setting
- Justice · Relationships
- Evidence
- AI involvement supported · Causal attribution established · 1 source
- 3 claims: 3 documented. 3 open questions
- People reported harmed
- 1 person
AI system as recorded: Generative artificial intelligence, not identified in the opinion, which the appellant admitted using to prepare an appellate brief that cited fictitious cases
What Happened
The brief. A self-represented party appealed a Sarpy County District Court order that found him in willful contempt of a 2023 divorce decree and parenting plan and sanctioned him with 90 days' incarceration subject to purge conditions. The Nebraska Supreme Court found that his appellate brief contained numerous citations to fictitious cases and misstatements of law, which it said were the result of his admitted use of generative artificial intelligence. The opinion does not identify the tool or quote the fabricated citations.
The sanction. Applying its 2026 decision in Prososki v. Regan (which struck an attorney's brief, dismissed the appeal and referred the attorney for discipline), the court held that self-represented litigants are held to the same standard as practising attorneys and that submitting a brief that relies on nonexistent legal authority is an abuse of the judicial process worthy of sanctions. It struck the brief. Because it had not previously addressed the consequences for self-represented parties, it stopped short of dismissing the appeal and instead reviewed for plain error, while warning that dismissal may follow in future cases.
Result. Reviewing for plain error only, the court found none and affirmed the contempt finding, the incarceration sanction with purge conditions, the temporary reduction of parenting time, the attorney-fee award and the denial of leave to proceed in forma pauperis. The contempt itself arose from unpaid court-ordered sums and parenting-plan violations that the district court found willful; the AI-related sanction concerned only the appellate brief and the scope of review.
Reported harm
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.
Outcome
ResolvedThe Nebraska Supreme Court struck the appellant's brief as a sanction, declined to dismiss the appeal because the standards for self-represented parties had not previously been addressed, reviewed the five assignments of error for plain error only, found none and affirmed the district court's contempt order (90 days' incarceration with purge conditions, a temporary reduction of 2025 summer parenting time to five weeks and attorney fees) on 2 October 2026. The court stated that in future cases dismissal of the appeal in lieu of plain-error review may follow.
What remains unknown
- 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.
What the evidence supports
AI involvement: supported. 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.
3 claims: 3 documented. What the statuses mean
Documented 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.
- nebraska.gov(opens in new tab) supports · English
'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'
Documented 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.
- nebraska.gov(opens in new tab) supports · English
'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'
Documented 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.
- nebraska.gov(opens in new tab) supports · English
'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'
Sources
1 source inspected. Sources that repeat one account do not corroborate each other.
- Nebraska Supreme Court opinion, 322 Neb. 451, No. S-25-546, filed 2 October 2026 (court PDF, docId N00013498PUB)(opens in new tab)
s1 · nebraska.gov · Court record · English · Inspected · 2 October 2026 · Primary
How the sources were read, and where the events happened
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. Applies to s1.
Event countries: United States. Affected-person countries: United States. Court countries: United States.
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.
Reviewed for publication 2026-10-09: 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.
People described
One self-represented appellant in a Nebraska divorce and contempt case whose appellate brief was struck and whose appeal was reviewed only for plain error; a party to a published opinion but a private person, not named here.
People reported harmed in this case
1 person
1 AI participant · 0 other people harmed
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.
Counted once within this case. The same person may appear in other cases. This count does not establish AI causation.
Cite this case
Compiled per our published methodology: verification statuses, sourcing standards, and corrections process.
APA
NOPE. (2026). Nebraska Supreme Court strikes a self-represented appellant's brief over fabricated citations from admitted AI use; plain-error review only (2 Oct 2026). AI incidents. https://nope.net/incidents/2026-nebraska-supreme-court-strikes-self-represented-appellant-brief-over-ai-fabricated-citations
BibTeX
@misc{2026_nebraska_supreme_court_strikes_self_represented_appellant_brief_over_ai_fabricated_citations,
title = {Nebraska Supreme Court strikes a self-represented appellant's brief over fabricated citations from admitted AI use; plain-error review only (2 Oct 2026)},
author = {NOPE},
year = {2026},
howpublished = {AI incidents},
url = {https://nope.net/incidents/2026-nebraska-supreme-court-strikes-self-represented-appellant-brief-over-ai-fabricated-citations}
} Related cases
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