Russia fired unmanned aerial vehicles on Kyiv and provinces overnight into Friday.
Kyiv city hall said air defences were in action and urged residents to stay in shelters, the Ukrainska Pravda website reported.
Debris from a downed UAV damaged residential buildings in Kyiv's Solomianskyi district and injured at least two people, the AFP news agency reported.
One man was hospitalized, while another person was treated at the scene, the city authorities said.
Upper-floor flats were damaged and windows blown out, according to officials.
Fragments of a destroyed drone also fell on a house in the eastern Darnytskyi district, Kyiv Mayor Vitali Klitschko said.
A fire broke out, but there were no casualties, Ukrainska Pravda reported.
A shrapnel from a downed UAV dropped on a high-rise building in the southern Holosiivskyi district, without causing casualties, according to the Kyiv military administration.
During the night of December 21-22, Ukraine's air force said several groups of drones were heading for the centre, west and south of the country.
Ukraine downed 24 out 28 of the UAVs fired by Russia, over the Kyiv, Odesa, Mykolaiv, Kherson, Zhytomyr, Rivne, and Khmelnytskyi regions, according to officials.
Russian attacks on the southern Kherson region killed one person and injured a further two, news outlets reported.
Friday is day 667 of Russia’s war on Ukraine.
Russia invaded Ukraine on February 24, 2022, launching the largest military campaign in Europe since World War II.
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Source: Ukrainska Pravda, AFP, Kyiv Post, The Kyiv Independent