French authorities raided the Paris office of Elon Musk’s X and summoned the billionaire for an interview, a major escalation of European regulators’ battles with the social-media platform.

The Paris prosecutors’ office said a search was underway Tuesday at the French offices of Elon Musk’s social media platform X as part of a preliminary investigation into a range of alleged offences, i...

The Paris Prosecutor said in a statement released in the wake of the raid, that it had since been widened the scope of the probe to include concerns about X’s AI tool Grok, following complaints that i...