Firefighters battle blaze at power plant in Kharkiv

STORY: Ukrainian officials accused retreating Russian forces of launching retaliatory attacks on civilian infrastructure in response to a rapid weekend offensive by Ukrainian troops that drove Russia to abandon its main bastion in the Kharkiv region.

Deputy chief of Kharkiv region emergency services, Anatolli Torianyk, confirmed one duty officer had been killed following the strikes.

Moscow denies its forces deliberately target civilians.