A Ukrainian drone attack launched overnight succeeded in destroying an ammunition depot in the western Russian region of Tver, a source from Ukraine’s Security Service (SBU) told CNN on Wednesday.

Partisans in Donetsk Region discovered a large depot of Russian shells, with artillery being delivered there by trucks over several days, the partisan movement ATESH reports. "An agent from the ranks of the 36th Separate Motor Rifle Brigade of the Russian Federation provided us with information about the location of a new field artillery depot

The Ukrainian drone strike on the arms depot in Russia's Tver Oblast destroyed two to three months' worth of munitions, Estonian Colonel Ants Kiviselg, head of the Estonian Defense Forces Intelligence Center,