A major Ukrainian drone attack on Russia triggered a giant blast and forced the partial evacuation of residents near the site of a large Russian arsenal in the Tver region on Wednesday, war bloggers and some media reported.

Local authorities have partially evacuated residents of Toropets in Russia’s Tver Oblast after a mass drone attack overnight caused a large fire, Tver Oblast Governor Igor Rudenya claimed on Sept. 18.

A substantial Ukrainian drone attack in Russia's Tver region ignited a massive explosion and led to partial evacuations. Unverified reports and media reveal a huge fireball in the night sky and minor earthquake detections.