French authorities have taken the founder and chief executive of Telegram into custody on charges related to the dissemination of content on the online platform. Pavel Durov was detained after landing Saturday night in a private jet at the Bourget airport outside Paris. The arrest warrant was issued as part of an inquiry into allegations of fraud, drug trafficking, organized crime, promotion of terrorism, and cyberbullying, the Guardian reports. “This is a monstrous attack on freedom of speech worldwide,” said a former press secretary to Durov, per the New York Times. “Enough of Telegram’s imp…