At least seven people were injured in a Russian attack on the Ukrainian city of Kharkiv during the night, according to the city's mayor Ihor Terechov.
Several explosions were heard in the city around 1 am. A nine-story residential building was hit in the attack.
The city of Tjuhuiv in the Kharkiv region was also attacked during the night. According to the region's governor, a commercial building was damaged, but no one was injured.
Earlier on Sunday evening, at least six civilians, three men and three women, were also injured when Russia attacked several districts of Kharkiv with so-called guided aerial bombs. Ukrainian police are investigating the Russian attacks as war crimes.