Ah, excuse the double post - it seems we posted in the same minute. I'm not sure what is etiquette here (first time I post) so let me know if I should delete it.
https://news.ycombinator.com/item?id=41341353 This links to a French news article that explains that there was a warrant for him for 'lack of moderation and cooperation with law enforcement' by Telegram.
>French media reports that an OFMIN (small office) warrant was issued against him by the French National Directorate of the Judicial Police based on a preliminary investigation on Durov's supposed "failure to control content on Telegram".
https://news.ycombinator.com/item?id=41341353 This links to a French news article that explains that there was a warrant for him for 'lack of moderation and cooperation with law enforcement' by Telegram.
Edit: Direct link to article: https://www.tf1info.fr/justice-faits-divers/info-tf1-lci-le-...