Ukraine says a Russian missile strike overnight has killed at least two people in the city of Zhytomyr, which lies 120km (75 miles) west of Kyiv.
The strike, aimed at an air base in the city, hit nearby residential homes, reports the BBC.
Ukraine's Ministry of Internal Affairs tweeted that at least two people were killed while 16 people were injured. A government official, Anton Gerashchenko, had earlier said on his Telegram account that the death toll was even higher.
"So far, four people have died. Including a child," he said.
Ukraine government accounts on Facebook and Telegraph have shared video which they said was of the explosion's aftermath. Vision showed rescuers scrambling to dig out survivors from the rubble.
Ukraine's foreign ministry has tweeted saying one of the buildings hit was a "maternity home".