The drone blew out a wall and surrounding windows in the building in Sumy, a major city, just after 1 a.m., the Sumy regional administration said.

The Ukraine conflict is the first major drone war in military history. Despite tactical losses on several parts along the line of contact, the Ukrainian military has continued to maintain strategic pressure on Russia by targeting and attacking major targets behind enemy lines.

Russia’s defence ministry on Wednesday said that its troops had captured the village of Novoielyzavetivka in Ukraine’s eastern Donetsk region, near the logistics centre of Pokrovsk, the latest target in their steady advance westward.