France’s prosecutor’s office has released more information regarding the arrest of Telegram founder and CEO Pavel Durov on Aug. 24, Paralel.Az reports citing French media.

In an Aug. 26 notice, French prosecutors said Durov had been taken into custody as part of a judicial investigation “against person unnamed” on charges including complicity with illegal activities, refusal to communicate to authorities, money laundering, criminal association, and providing cryptology services without prior declaration. Authorities said they intended to question the Telegram founder as part of this investigation and had extended the timeframe for his custody from Aug. 25 to Aug. 28.