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AII-1000-61023
ConfirmedA court, a regulator or the organization itself has stated the core facts, or the record cites a court or regulator source.Supporting sources are pending verification.

Lawyer sanctioned for citing AI-generated fake legal precedents in Siracusa court

A lawyer in Siracusa, Italy was sanctioned after submitting four fabricated Court of Cassation precedents with false quotations to support a sublease contract case. The lawyer reportedly generated the fake citations using generative AI, which a court verification process identified as non-existent.

20 February 2026 Β· Reliability and hallucination
20 February 2026
AII-1000-61023
Quick facts
Category
Reliability and hallucination
Country
Italy
Date
20 February 2026
Drafted by
Raidu Incident Detection

What happened

A lawyer submitted four non-existent Court of Cassation precedents as evidence in a case at the Tribunale di Siracusa relating to a sublease contract. The precedents included purported direct quotations from the cited decisions.

Court judges verified the citations and found that none of the four cited precedents contained the quoted passages attributed to them.

Reported impact

The lawyer was sanctioned by the court for improper use of legal sources.

Index analysis

The lawyer reportedly used generative artificial intelligence to produce the legal precedents and supporting arguments.

Classification

Category
Reliability and hallucination
Industry
Government, security and defence
Country
Italy
Harm status
Actual harm
Intent
Unintentional
Timing
Unknown
Harm types
Public interest, Reputational
Harmed
Civil society
Failure modes
Fabricated citation, Hallucination
AI systems
Generative AI system

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.

How sources are verifiedSuggest a source for this incident