MOSCOW, May 3 (Xinhua) -- Ukrainian attacks left two people dead and four others injured in Russia's Donetsk region and another two wounded in the Belgorod region on Sunday, local authorities said.

A married couple were killed and another man injured in the Kalininsky district of Horlivka in a Ukrainian drone attack, local governor Denis Pushilin wrote in a post on the Russian social media platform Max.

In the Tsentralno-Gorodskoy district of Horlivka, a man sustained serious injuries when an unexploded cluster munition detonated. Two other men were wounded in a separate drone strike in a settlement within the Mariupol urban district.

Vyacheslav Gladkov, governor of the Belgorod region, said that a Ukrainian drone struck a commercial facility, damaging the building and seven passenger vehicles, adding that a 17-year-old girl was critically injured and a 20-year-old man suffered shrapnel wounds to the shoulder. ■