Pavel Durov, the founder and CEO of Telegram, was released from pre-trial detention on Wednesday after spending four days in custody. Durov was detained by French authorities on Saturday at Le Bourget Airport outside Paris. His arrest was based on allegations related to violations of laws concerning drug trafficking, child sexual content, promotion of terrorism, and cyberbullying, which were attributed to inadequate moderation practices on Telegram.

The French Public Prosecutor’s Office confirmed that Durov’s detention was authorized by an investigative magistrate who approved a custody period until Wednesday, August 28th. The investigation centers on Telegram’s alleged failure to comply with French regulations, particularly in the context of the platform’s content moderation.

Addressing the case on Monday, French President Emmanuel Macron stated that Durov’s arrest was not politically motivated but part of an ongoing judicial investigation.

Telegram posted on Sunday in support of its president and CEO, claiming that Durov has “nothing to hide” and that the messenger platform abides by the laws of the EU, including the Digital Services Act. The platform’s moderation is “within industry standards and is constantly improving,” the post read, refuting the allegation of Telegram’s inadequate moderation standards by the French authorities.

Durov, originally from Russia, fled the country after refusing to comply with government demands to shut down opposition political groups on his earlier social network, VKontakte (VK), and to hand over user data to Russian authorities. In 2013, he and his brother Nikolai Durov launched Telegram.