A 6-year-old boy was among those killed, said city military administrator Tymur Tkachenko, who said the overnight attack had caused damage in 27 locations across four districts of the Ukrainian capital.

President Volodymyr Zelensky posted a video of burning ruins, saying people were still trapped under the rubble of one residential building.

“It’s a horrible morning in Kyiv. The brutal Russian strikes destroyed entire residential buildings and damaged schools and hospitals,” Foreign Minister Andrii Sybiha posted on X with an image of a devastated block of apartments.

Russia, which denies targeting civilians, has in recent months stepped up air strikes on Ukrainian towns and cities far from the front line of its invasion, now in its fourth year.

US President Donald Trump, signalling frustration with his Russian counterpart, shortened a deadline this week for Vladimir Putin to make peace.

“President Trump has been very generous and very patient with Putin, trying to find a solution,” Sybiha wrote.