The Russian armed forces, on Wednesday, said dozens of Ukrainian drones were repelled during the night in regions close to the border.
A British analysis suggested Moscow forces also shot down one of their own combat jets last month.
The Defence Ministry in Moscow said a total of 31 unmanned aerial vehicles were intercepted by air defence forces over the Belgorod, Bryansk and Kursk regions.
Belgorod Governor, Vyacheslav Gladkov, however, spoke of the damage of an administrative building.
Russia had launched a full-scale invasion of Ukraine more than 19 months ago.
Meanwhile, attacks on Russian territory have increased recently although Moscow often downplays their impact.
However, the extent of the damage and the number of victims bear no relation to the consequences of the war in embattled Ukraine.
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