Pavel Durov, the founder and CEO of Telegram, has been arrested in France following a search warrant issued as part of a preliminary investigation.
French authorities argue that the lack of moderation and cooperation from Telegram with law enforcement make it a facilitator of various crimes, including drug trafficking and fraud.
Durov could be charged with multiple offenses, such as terrorism, drug trafficking, and money laundering.
Telegram's stock fell by 7% following this news.