Russia has charged Telegram founder Pavel Durov with aiding terrorist activities, according to the country’s Federal Security Service. The move marks a major escalation in Moscow’s confrontation with the messaging platform and its billionaire creator.

Authorities say Telegram has been used to support the coordination of deadly attacks and sabotage inside Russia. The case adds to broader accusations from the Russian state that digital platforms can facilitate security threats when they are not tightly controlled.

The latest action underscores growing pressure on Telegram, which has long occupied a complicated position in Russia. While the app remains widely used, officials have repeatedly raised concerns about encrypted communications, moderation and the ability of law enforcement to monitor activity on the platform.

With Pavel Durov now formally charged in Russia, the dispute between Moscow and Telegram appears to be entering a more serious legal and political phase. The development is likely to draw attention to how governments try to hold platform founders responsible for alleged misuse of their services.