Incident Tracker / United States (federal)
Twigg v. BSN Sports, Inc.
·United States District Court for the Middle District of Pennsylvania·US-FEDPendingprovisional
On 2026-05-21, in Twigg v. BSN Sports, Inc., et al, the Middle District of Pennsylvania ordered the filer to show cause why sanctions should not issue for the defective authorities. Counsel filed a motion using quotations that did not appear in the cited source, multiple nonexistent or hallucinated authorities, and authorities used for propositions they did not support.
- Court
- United States District Court for the Middle District of Pennsylvania
- Date
- 2026-05-21
- Who used the AI
- Lawyer
- AI tool
- Not identified in the record
- Conduct
- Plaintiffs’ counsel Nicholas Mattiacci filed a brief with fictitious cases, quotations absent from cited cases, and cases that did not support the asserted propositions, then characterized the problems as clerical errors. The court ordered a show-cause brief and hearing.
- Outcome
- Pending
- Penalty
- No monetary penalty recorded
- Regulatory outcome
- No separate regulatory disposition recorded
- Status
- Provisional — written by the court-decisions pipeline, awaiting the editor
- Last checked
- 2026-09-08
Primary sources for this incident
Related regulation records for this incident
No related regulation record has been linked to this incident yet.
Similar incidents on the record
- Zhejiang Dingli Machinery Co. v. United States, Ct. No. 24-00221-MMB (Ct. Int'l Trade 2026)2026-09-22 · United States Court of International Trade · PendingIn the U.S. Court of International Trade, Judge M. Miller Baker ordered a Chinese exporter to substantiate brief statements that Commerce took part in a Canadian antidumping case. If it cannot, it must show cause why it…
- Falkenstein v. Niles, No. 2:26-cv-07078-SB-PD (C.D. Cal.)2026-09-03 · US District Court, Central District of California · PendingIn the US District Court for the Central District of California, defence counsel filed materials with false quotations, misplaced propositions and representations not found in the complaint. Judge Blumenfeld ordered cou…
- James v. Conley, No. 1:23-cv-24467 (S.D. Fla.)2026-08-27 · US District Court for the Southern District of Florida (Magistrate Judge Elfenbein, report and recommendation) · PendingIn the US District Court for the Southern District of Florida, a magistrate judge found that plaintiff's Fifth Amended Complaint pleaded nonexistent police-training publications that counsel conceded were AI hallucinati…
- Hill v. Foundation Media LLC, No. 1:25-cv-05947 (AS) (S.D.N.Y. 2026)2026-09-29 · United States District Court for the Southern District of New York · WarningIn New York federal court, Judge Arun Subramanian ordered defence counsel to explain AI-affected quotations in a response brief, took no further action, and called the episode a wakeup call. Counsel's 1 October letter d…
Cite this record
SafeLegalAI Global Legal AI Incident Tracker, “Twigg v. BSN Sports, Inc.”, safelegalai.com/tracker/twigg-v-bsn-sports-inc-et-al (accessed 2026-10-07). Data: CC BY 4.0.