France on Wednesday charged Pavel Durov, the founder and chief of Telegram, with a litany of violations related to the messaging app and banned him from leaving the country while allowing the billionaire to walk free after four days under arrest.

Durov, 39, was charged on several counts of failing to curb extremist and illegal content on the popular messaging app following a hearing with investigating magistrates in Paris.

Russian-born Durov was arrested at Le Bourget airport outside Paris late Saturday and questioned in subsequent days under arrest by investigators.