Explosions rang out before dawn on Monday in Kyiv and in other Ukrainian cities as officials said that Russia had launched another drone attack targeting power plants and other key infrastructure.

The city government in Kyiv, the Ukrainian capital, issued warnings for residents to take shelter. At least four loud explosions were heard in the capital, and the mayor, Vitali Klitschko, said that critical infrastructure had been hit and that power and heat had been knocked out to some neighbourhoods.

“There is damage,” he wrote in an online statement. “Energy and heating engineers are working to quickly stabilise the situation with energy and heat supply.”

As an aerial battle between Russian drones and Ukrainian fighter jets and air defence missiles was heard in the skies above Kyiv overnight, officials in two other regions in central and southern Ukraine, Dnipropetrovsk and Mykolaiv, also reported drones overhead late on Sunday and early on Monday.

The Ukrainian Air Force said that it had shot down 20 of 35 drones that Russia had launched, though those that evaded air defences had hit power plants, electrical systems and other civilian targets. By around 5am (local time), the authorities had lifted the air raid alert.