Russia said it was working to repel a Ukrainian drone attack on Toropets, where there's a major military depot, as explosions lit up the night.

Ukrainian drones have struck a large military depot in a town deep inside Russia overnight, causing a huge blaze and prompting the evacuation of residents.

"The enemy hit an ammunition depot in the area of Toropets," said Yuri Podolyaka, a Ukrainian-born, pro-Russian military blogger.

A Ukrainian drone attack destroyed a warehouse storing missiles, guided bombs and artillery ammunition in Russia's Tver region, a source in Ukraine's SBU state security service told Reuters on Wednesday.

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.

A Ukrainian drone attack Wednesday on a Russian warehouse sparked an earthquake-like blast and fire that forced the evacuation of a town in Russia’s Tver region. "The enemy hit an ammunition depot in the area of Toropets,

Sources in the Security Service of Ukraine (SBU) confirmed to AFP that Ukrainian drones destroyed an ammunition depot in the Tver region in western Russia. The strength of the explosions was so great that they were visible in NASA satellite images and caused a minor earthquake.