Russia attacked Kyiv with missiles, local authorities said on Thursday, as they urged residents to take shelter hours after President Volodymyr Zelenskyy spoke with US President Donald Trump and European leaders.

A Reuters witness heard explosions in Kyiv, while authorities of the northeastern Ukrainian city of Sumy said one person was killed in a drone attack, as air strike alerts were issued for most of Ukraine's territory.

"The enemy is attacking the capital with ballistic missiles. Stay in safe places until the air raid alert is over!" Tymur Tkachenko, the head of Kyiv's military administration, said in a Telegram post early on Thursday.

In France, Zelenskyy said he had spoken to Trump and French President Emmanuel Macron, after meeting other leaders attending a Group of Seven meeting. He described it as a "coordinating conversation" to try to end the ongoing Russia-Ukraine conflict.

The strike on Kyiv is the second air attack by Russia this week. A 1,000-year-old monastery was badly damaged on Monday in a major attack by Russia that killed 10 people and drew condemnation from European leaders.

Trump said on Wednesday that Russia was losing more soldiers than Ukraine, after he suggested that both Russian President Vladimir Putin and Zelenskyy seemed open to doing something about the conflict.

Putin did not discuss the possibility of a meeting with Zelenskyy during his latest phone call with Trump, the Kremlin said this week. 

(With input from Reuters)