A Russian missile strike on the Kyiv television tower, an iconic structure in the city, has been symbolic of a day of heavy shelling in Ukraine.
Russia's defence ministry had earlier urged civilians to leave the capital and said it was preparing to strike specific targets in the city, including those involved in "informational attacks against Russia".
"We urge Ukrainian citizens involved by Ukrainian nationalists in provocations against Russia, as well as Kyiv residents living near relay stations, to leave their homes."
Reports in Ukraine also suggest more than 70 Ukrainian soldiers were killed in a Russian artillery attack on a base in Okhtyrka, a city between Kyiv and Kharkiv.
A missile strike also hit the Kharkiv regional administration building in the centre of Ukraine's second-largest city.
Meanwhile, the UNHCR believes that over 600,000 refugees have already fled Ukraine.
The agency said it could be "Europe’s largest refugee crisis this century."
The second round of talks in Belarus has been scheduled between Ukraine and Russia for tomorrow, according to reports in Russia.
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