Russia attacked Ukraine's two largest cities Kyiv and Kharkiv early on Saturday, officials said, with one person killed and at least 15 injured.
Kyiv Mayor Vitali Klitschko said one person was killed in the capital city and four injured, including three being treated in hospital.
Klitschko said the strikes had triggered fires in districts on either side of the Dnipro River, which
bisects the capital. He said heating and water supplies had been disrupted in parts of the city east of the river.
Ukraine's air force said both drones and missiles had been deployed in the assault on the capital.
Tymur Tkachenko, head of Kyiv's military administration, reported strikes in at least four districts. A medical facility was among the buildings damaged.