Three people have died and at least 26 others injured in a wave of Russian drone and missile strikes on Kyiv, Ukrainian officials say, BBC reported.

Mayor Vitaliy Klitschko described strikes, which caused explosions and fires in residential buildings across the city, as "massive". 

Kyiv's energy infrastructure was also damaged, leaving some buildings in the north-east without heat, he said. Ukraine's air force reported several other regions across the country were also being targeted, according to BBC.