Elon Musk and former X CEO Linda Yaccarino face mounting legal scrutiny in France as authorities reportedly escalate a high-profile cybercrime investigation into the platform.

French prosecutors said on Tuesday they were widening an investigation into Elon Musk's social media platform X and that they have summoned the tech billionaire for questioning in April.

The French probe will now also investigate alleged complicity in the "detention and diffusion" of images of a child‑pornographic nature and the violation of a person's image rights with sexually expli...