Four people were killed in Ukraine overnight and this morning in Russian strikes, Ukrainian officials say.

According to BBC report, three were killed and seven injured in the north Sumy region, after Russia hit villages with guided aerial bombs, mortars and rockets.

Strikes hit the villages of Vorozhba and Bilopillia, officials say, prompting emergency evacuations.

Sumy is close to the Russian region of Kursk, where Russian officials say three people were killed overnight in Ukrainian strikes.

Ukraine says some of its forces are still active inside Kursk, nine months after a surprise incursion there by Ukrainian troops.

Separately, one person was killed in a drone attack on the southern city of Odesa, authorities say, and four were wounded in the eastern city of Kharkiv, in an attack using Shahed drones, BBC reported.