A Russian drone strike on a residential home in Ukraine’s Kharkiv region has left three young children and a man dead, regional officials said, as attacks on frontline areas continue.

A Russian strike hit a multi-storey residential building in Kharkiv’s Kyivskyi district on Friday, injuring at least 12 people, officials said.

A series of Russian missile attacks struck the suburbs of Kharkiv on December 24, killing one person and wounding 13, local authorities reported.

A Russian drone hit a bus in Ukraine's northeastern Kharkiv region early on Friday, injuring six construction workers, including one who was in a critical condition, the regional governor said.