A mass drone attack struck several districts of the Ukrainian capital Kyiv early on Tuesday, damaging an apartment building and injuring up to 11 people, city officials said.

Mayor Vitali Klitschko said swarms of drones continued to move towards the capital and warned of a danger of Russian missiles being deployed.

“Enemy drones are coming over the city from three directions. There is also the danger of missiles,” Klitschko wrote on the Telegram messaging app.

Klitschko said a strike had damaged the top floor of an apartment block and non-residential areas in the Solomianskyi district near the centre of the capital. He said 11 people were injured, including six receiving treatment in hospital.

Both Ukraine and Russia have launched mass drone attacks in recent weeks as the two sides have held two sessions of direct talks on ending the more than three-year-old war. The talks have produced agreements on freeing prisoners of war and returning the bodies of fallen soldiers, but little more.

“More strikes by Russian drones on residential buildings in Kyiv,” Ukrainian President Volodymyr Zelenskiy’s chief of staff, Andriy Yermak, wrote on Telegram. “Russia is continuing its war on civilians.”

Rescue teams were also headed for sites of strikes in three other districts and air defence units were in operation.

Tymur Tkachenko, head of the city’s military administration, said there had been repeated strikes in Solomianskyi district and a fire triggered by fallen drone fragments in Darnytskyi district on the eastern edge of the capital.

“This is a very difficult night,” he wrote, adding that there had been power cuts in some areas.