Russian authorities have filed charges against Telegram founder and CEO Pavel Durov, accusing him of aiding terrorism in a case tied to the messaging platform’s alleged use in attacks inside Russia. The move also places Durov on an international wanted list, sharply escalating pressure on one of the world’s most prominent tech executives.

According to Russian claims, investigators believe Telegram has been used by Ukrainian operatives to coordinate attacks. Officials say the case centers on allegations that the platform helped facilitate terrorist activity, though the available details remain limited in the publicly released summary.

The case is likely to draw attention well beyond Russia because Telegram is widely used across the region and around the world for private messaging, public channels and rapid information sharing. The accusations also add to long-running disputes over encrypted platforms, online security and how much responsibility tech companies bear for content and communications carried on their services.

For now, the central development is that Russia has formally charged Durov and linked Telegram to alleged terrorism-related activity. The decision sets up a new confrontation between Russian authorities and the company’s founder at a time when the app remains a major communications tool in wartime and political conflict.