At least 15 people have been killed and more are feared trapped after Russian Uragan rockets hit a five-storey apartment block in Ukraine's Donetsk region, leading to the building partially collapsing, local officials said.
The regional emergency service gave the latest death toll from the strike in the town of Chasiv Yar as 10 people, with rescue work still going on.
Several hours earlier, Donetsk region Governor Pavlo Kyrylenko said on Telegram that at least 34 people could be trapped under the ruins.
Andriy Yermak, chief of staff to Ukraine's president, said in a Telegram post that the strike was "another terrorist attack," and that Russia should be designated as a "state sponsor of terrorism" as a result.
A bill to apply this label to Russia has been tabled by two U.S. senators, who expressed their confidence the proposal would be voted through during a Thursday visit to Kyiv.
Russia, which says it is conducting a "special military operation" to demilitarise Ukraine, denies targeting civilians.
Man charged with 10 counts of attempted murder after knife attack on UK train
Tanzania's Hassan sworn into office after deadly election violence
Powerful 6.3 quake kills at least 20 in Afghanistan, hundreds injured
Turkey set to call for action on Gaza as soon as possible, source says
