Ukraine's capital suffered what officials said was Russia's largest drone attack of the war on Saturday, leaving five people wounded as the rumble of air defences and explosions woke residents at sunrise, Paralel.Az reports citing Reuters.

The attack began hitting different districts of Kyiv in the early hours of Saturday, with more waves coming as the sun came up. The air raid warning lasted a total of six hours.

President Volodymyr Zelenskiy said over 70 Iranian-designed Shahed kamikaze drones had been launched at Ukraine, and that most -- but not all -- had been downed.

The air force subsequently announced it downed 71 Shahed drones and one missile.

Mayor Vitali Klitschko, writing on the Telegram app, said the attack had injured five people, including an 11-year-old girl, and damaged buildings in districts all across the city.

The target of Saturday's attack was not immediately clear, but Ukraine has warned in recent weeks that Russia will once again wage an aerial campaign to destroy Ukraine's energy system, as it sought to do last winter.

Ukraine's energy ministry said nearly 200 buildings in the capital, including 77 residential ones, had been left without power as a result of the attack.