Russia launched drones and ballistic missiles at multiple targets across Ukraine, Kyiv authorities said on Friday, in a deadly air assault that left at least four people dead and 20 wounded in the capital.

Kyiv mayor Vitali Klitschko says a Russian missile and drone attack on the capitla early Friday has killed at least four people and injured 20 others.

Ukraine unleashed more than a hundred drones smuggled deep into Russia in what it called its most damaging attack yet.