KYIV: Russia launched an overnight drone attack on Kyiv after a 12-day break, a Ukrainian military official said on Sunday, with air defence systems preliminarily destroying all targets on their approach.

"Another enemy attack on Kyiv," Serhiy Popko, a colonel general who heads Kyiv's military administration, said in a post on the Telegram channel. "At this moment, there is no information about possible casualties or damage."

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Reuters witnesses heard blasts resembling the sound of air defence systems hitting targets. There was no immediate information about the scale of the attack.

Kyiv, its region and a number of central and eastern Ukraine's regions were under air raid alerts for about an hour after 2 a.m. local time (2300 GMT).