Three civilians, two men and one woman, were killed in Russian attacks on a rural area southeast of the city of Zaporizhzhia in southeastern Ukraine on Sunday, according to Governor Ivan Federov.
During the night to Monday, explosions have been heard in the port city of Odessa in the south, according to Mayor Hennadiy Trukhanov.
The Ukrainian air force has simultaneously warned of Russian drone attacks against several Ukrainian regions.
Ukraine, in turn, has carried out drone attacks against the Volgograd region, according to Russian authorities. A fire broke out at a railway station, according to the region's governor, no one is reported to have been injured.