Russian officials have claimed they are hitting legitimate targets. But the U.N. High Commissioner for Human Rights on Friday expressed his shock at the depth of civilian suffering caused by the bombing, amid broader allegations of abuses.

Mayor Vitali Klitschko posted on Telegram that ‘one of the capital’s infrastructure facilities has been hit.’

Russian strikes have pummeled Ukraine in an onslaught that has caused widespread blackouts and deprived millions of Ukrainians of electricity, heat and water.

Move comes the same day United Nations announce Russia and Ukraine brokered a deal to extend grain agreement ahead of its expiration Saturday.

Authorities are to start investigating reports from Kherson residents that Russian forces set up at least three alleged torture sites in now-liberated parts of the wider Kherson region.