Elon Musk looks on as President Donald Trump speaks at the U.S.-Saudi Investment Forum at the John F. Kennedy Center for the Performing Arts in Washington, Nov. 19, 2025.
French cybercrime authorities have escalated an investigation of Elon Musk and his social network X to a criminal probe, the Paris prosecutor's office said Thursday.
Musk and former X CEO Linda Yaccarino were issued summons by French authorities for April 20. Both of them declined to appear and answer questions, according to the prosecutor's office.
In February, Musk called the probe a "political attack," after French authorities raided the Paris office of X.
The probe, requested by French Member of Parliament Éric Bothorel in early 2025, has focused on complaints of algorithmic manipulation by X to influence and interfere in French politics, and allegations that Musk and X knowingly allowed users of the AI chatbot Grok to create and spread Holocaust denials and nonconsensual sexually explicit deepfake images on X.
Grok is developed by xAI, Musk's artificial intelligence company that acquired X (which he already owned) and earlier this year merged with SpaceX, his reusable rocket company. A version of Grok is also integrated into electric vehicles made by Tesla , Musk's automaker.
Other international jurisdictions are also investigating X and Grok, as is the California attorney general's office.
The probes generally focus on whether Musk and his companies deliberately allowed for the creation and spread of deepfake explicit images, including child sexual abuse materials, based on photos or videos of nonconsenting individuals.
In April, the U.S. Department of Justice reportedly told French authorities it wouldn't help investigate Musk or X, and accused France of inappropriately interfering with an American business.
Representatives for Musk and SpaceX didn't immediately respond to a request for comment. The Justice Department and the Paris prosecutor's office weren't immediately available to comment.
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