At least 11 people, including a pregnant woman, have been injured from ongoing Russian attacks in the Kyiv region early Friday morning, Kyiv Mayor Vitali Klitschko said.

Russia launched a heavy drone and missile attack on Ukraine early on Friday, killing six people in Kyiv and two more in the south in strikes on energy facilities, apartment buildings and infrastructure,

Friday's attack adds to growing anger and frustration among Kyiv residents as they face winter cold and darkness amid rampant power outages.

A strike that killed six was the latest in a series of aerial assaults, many of which have targeted the power grid in an effort to deprive Ukrainians of energy as winter looms.

Russia unleashed a major missile and drone barrage on Kyiv early Friday, killing four people, starting fires and scattering debris as the sound of explosions boomed across the city, Ukrainian authorities said.

A barrage of Russian missiles hit Kyiv on Friday, killing six people in one apartment block, attacks that Ukraine's President Volodymyr Zelensky denounced as a "heinous" bid to spread terror.

Almost four years of conflict have taken their toll and the war of attrition is continuing on the homefront - but many Ukrainians are fighting to keep morale high.

Millions of Ukrainians are enduring cold temperatures and darkness after a wave of Russian attacks against energy facilities caused widespread power outages across the country.