Overnight, Ukrainian drones attacked one of the largest arsenals in Russia, causing a powerful detonation in the town of Toropets in Russia's Tver Oblast, a source in the Security Service of Ukraine (SBU) told the Kyiv Independent.

A large-scale Ukrainian drone attack on Russia triggered an earthquake-sized blast at a major arsenal in the Tver region on Wednesday, forcing the evacuation of a nearby town, war bloggers and some media reported.

Renovated in 2018, the facility in Toropets is estimated to have stored tonnes upon tonnes of military goods, including explosives, artillery shells and ballistic missiles.