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.

French prosecutors raided the offices of Elon Musk’s social media platform X on Tuesday as part of a preliminary investigation into a range of alleged offences, including spreading child sexual abuse ...

France's raid and the summoning of Musk — which could further increase tensions between Europe and the U.S. over big tech and free speech — are linked to a year-long investigation into suspected abuse...