Eighty percent of Ukraine's capital, Kyiv, has been left without water supply after Russian missiles damaged critical infrastructure this morning, the region's mayor Vitaliy Klitschko said.

"Specialists are doing everything possible to return water to the apartments of Kyiv residents," Klitschko said.

Engineers are also working to restore power to 350,000 homes in Kyiv that were left without electricity after the strikes, he added. In

In Kharkiv region, Russia's strikes hit infrastructure leaving the subway and trolleybuses without power, its mayor Igor Terekhov said.

The region's water supply was also affected, but Terekhov said workers are "doing everything possible" to restore supplies to the homes of Kharkiv residents as soon as possible.