About 15 blasts were heard in Ukraine's Kharkiv on Friday morning, mayor Ihor Terekhov said, and Russian missile strikes appeared to be targeting the city's power supply, causing partial blackouts.
Terekhov did not report any casualties. He said some of the city's water pumps had stopped because of the attacks.
In central Ukraine, Kryvyi Rih mayor Oleksandr Vilkul said blasts were heard in the city, but provided no details.
In another central Ukrainian city, Vinnytsia, a "critical infrastructure object" has been damaged, according to mayor Serhiy Borzov.
The administration of the southern Ukrainian city of Zaporizhzhia also reported eight missile strikes and said some locals had been wounded.
According to Ukrainian officials, several Russian missiles were still moving towards targets in Ukraine.

Former US VP Dick Cheney dies at 84
Dozens killed, army helicopter downed as Typhoon Kalmaegi hits Philippines
Trump threatens to cut funds for New York City if Mamdani wins mayoral race
Worker trapped under collapsed medieval tower in Rome dies
Saudi Crown Prince bin Salman to visit Trump in White House
