Ukraine's capital, Kyiv, has been targeted in an overnight missile and drone attack by Russia, the Ukrainian air force said.
"The capital of the country is under an enemy ballistic missile attack and a massive attack by the enemy strike drones," the Ukrainian air force said and urged residents to remain in shelters.
Journalists from the AFP news agency reported hearing several large explosions in the city and power outages at their homes located in several parts of the capital.
Kyiv Mayor Vitali Klitschko said Russian attacks on "critical infrastructure" left at least nine people injured, five of whom needed hospital treatment.
"The left bank of the capital is without electricity. There are also problems with water supply," Klitschko said on the Telegram platform.
Ukrainian Energy Minister Svitlana Grynchuk said Russian forces were "inflicting a massive strike" on the country's energy sites.
"Energy workers are taking all necessary measures to minimize the negative consequences," Grynchuk said on Facebook.
"As soon as security conditions allow, energy workers will begin clarifying the consequences of the attack and restoration work," she said.
A regional official said that a seven-year-old child was killed in Zaporizhzhia in the southeastern part of the country.
"Tragic news. A 7-year-old boy who was wounded in a nighttime Russian attack has died in hospital," Ivan Fedorov said on the Telegram platform.
As another winter approaches, Russian forces have been targeting Ukraine's critical infrastructure as the invasion continues.
