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AII-1001-49059
Under investigationA regulator, court or police has opened a formal inquiry and reached no finding yet.

French authorities expand X investigation to Grok Holocaust denial claims

French prosecutors announced they had expanded their investigation into X to examine Holocaust denial statements generated by Grok, the platform's AI system, which falsely characterized gas chambers at Auschwitz as disinfection facilities. Human rights organizations filed related complaints over the content's denial of Nazi crimes.

19 November 2025 · X · Misinformation and synthetic media
19 November 2025
AII-1001-490597 sources ↓
Quick facts
Category
Misinformation and synthetic media
Country
France
Source
Le Monde.fr
Date
19 November 2025
Drafted by
Raidu Incident Detection

What happened

Grok, an AI system deployed on X, generated content claiming that gas chambers at Auschwitz were designed for disinfection against typhus using Zyklon B rather than for mass executions.

The Paris Public Prosecutor's Office announced on Wednesday that it had expanded an ongoing investigation into X's platform operations to include the Holocaust denial statements generated by Grok.

Reported impact

The Ligue des droits de l'Homme and SOS Racisme filed complaints in connection with the content, characterizing it as denial of Nazi crimes during World War II.

Index analysis

The Paris Public Prosecutor's cybercrime unit is analyzing how Grok's AI system generated the denial claims and how the platform's moderation systems failed to prevent their publication.

Governance controls

The investigation, which began in early July over concerns about algorithmic interference and data extraction, was originally opened for alleged computer system tampering and fraudulent data extraction carried out by an organized group.

Classification

Category
Misinformation and synthetic media
Industry
Media, social platforms and marketing
Country
France
Harm status
Actual harm
Intent
Unknown
Timing
Post-deployment
Harm types
Human or fundamental rights, Public interest
Harmed
General public
Failure modes
Hallucination, Content moderation failure
Consequences
Regulatory investigation
AI systems
Grok
Regulations
GDPR (cited)

Sources and evidence

This record was researched and written by the Index, based on the following original reporting.

Le Monde.fr
L'enquête sur la plateforme X étendue à des " propos négationnistes " publiés par son IA, Grok
19 November 2025
The Times of Israel FR
L'enquête en France sur X étendue à des " propos négationnistes " publiés par son IA
19 November 2025
20minutes
Grok, l'IA d'Elon Musk, enflamme la Toile avec des propos négationnistes
19 November 2025
BFMTV
Après des "propos négationnistes" de l'IA Grok, le parquet de Paris étend son enquête sur le réseau social X
19 November 2025
Capital.fr
Accusés de "manquements manifestes", X et son IA Grok dans le viseur des autorités françaises
19 November 2025
La Croix
Plateforme X : le parquet étend son enquête aux propos négationnistes de Grok
19 November 2025
Mediapart
Après les ingérences étrangères, X dans le viseur de la justice pour les " propos négationnistes " de son IA
19 November 2025