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AII-1001-24743
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Lawyer includes eight AI-generated fake court citations in Navarra appeal

A lawyer in Spain's Navarra region submitted an appeal in October 2025 containing eight court citations that were fabricated by an AI system. The Navarra Superior Court's Social Chamber archived the disciplinary case after the lawyer apologized and attributed the error to failure to review the AI-generated text.

October 2025 Β· Tribunal Superior de Justicia de Navarra Β· Reliability and hallucination
October 2025
AII-1001-24743
Quick facts
Category
Reliability and hallucination
Country
Spain
Date
October 2025
Drafted by
Raidu Incident Detection

What happened

A lawyer in Navarra included eight invented citations to court decisions in an appeal submitted in October 2025. The fabricated citations were attributed to the Constitutional Court, Supreme Court, Navarra Superior Court, and Madrid Superior Court, and were generated using artificial intelligence.

Reported impact

The Navarra court warned that fraudulent use of artificial intelligence in legal proceedings is sanctionable as procedural bad faith.

Governance controls

After being discovered, the lawyer apologized and stated she had acted without bad intent, attributing the error to lack of review of the AI output. The Social Chamber of the Navarra Superior Court archived the disciplinary proposal.

Classification

Category
Reliability and hallucination
Industry
Government, security and defence
Country
Spain
Harm status
Potential harm
Intent
Unintentional
Timing
Post-deployment
Harm types
Public interest, Reputational
Failure modes
Fabricated citation, Hallucination, Overreliance
AI systems
Unspecified generative AI system
Regulations
GDPR (cited)

Sources and evidence

Sources not yet published

This record was researched and written by the Index from original reporting. Its sources are still being verified by an editor, and they are listed here once that check is complete. Until then the record carries no reviewer.

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