Russia's overnight air attack on Kyiv - its eighth in May - was complex, with drones, cruise and likely ballistic missiles launched from different directions, Kyiv's officials said early on Tuesday.

"It was exceptional in its density - the maximum number of attack missiles in the shortest period of time," Serhiy Popko, head of Kyiv's city military administration, said in comments posted on the Telegram messaging app.

Commander-in-Chief of Ukraine's Armed Forces Valeriy Zaluzhnyi said Ukraine forces shot down all 18 missiles of various types that Russia launched.

Early morning strikes in Kyiv injured three people in the Solomyanskyi district, where several cars had caught fire and a building was damaged from falling rocket debris, Mayor Vitaliy Klitschko wrote on Telegram.

(With input from Reuters)