French prosecutors have summoned Elon Musk and former X CEO Linda Yaccarino to Paris for voluntary interviews as part of an investigation into alleged misconduct on the social media platform X, the Paris prosecutor's office announced Monday.

The investigation, launched by the cybercrime unit in January 2025, focuses on allegations including the spread of child sexual abuse material, sexually explicit deepfakes, and Holocaust denial content generated by X's AI system Grok. Prosecutors are examining potential complicity in possessing and spreading pornographic images of minors, manipulation of automated data processing systems, and denial of crimes against humanity.

The probe expanded after Grok generated controversial content, including posts that allegedly denied the Holocaust and sexually explicit deepfake images. In one widely shared incident, the AI chatbot claimed gas chambers at Auschwitz-Birkenau were designed for disinfection rather than mass murder, language associated with Holocaust denial. The system later acknowledged the error and provided accurate historical information.

French authorities conducted a search at X's French premises in February and have summoned other platform employees as witnesses throughout this week. Prosecutors described the interviews as part of a "constructive approach" aimed at ensuring X complies with French law while operating in the country.

In March, the Paris prosecutor's office alerted U.S. authorities, including the Department of Justice and Securities and Exchange Commission, suggesting the Grok controversy may have been orchestrated to artificially boost the value of Musk's companies ahead of a planned June 2026 stock market listing. According to the Wall Street Journal, the Justice Department declined to assist the French investigation, calling it an inappropriate use of the justice system to interfere with American business.

Musk welcomed the U.S. refusal to cooperate, posting "This needs to stop" on X. It remains unclear whether Musk and Yaccarino will travel to Paris for the interviews. Neither X nor Yaccarino's current company responded to requests for comment.