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.

Officials say Ukraine was under an ongoing Russian ballistic missile and drone attack early Friday that wounded at least three people.

After Russia bombarded Kyiv and other cities, Ukraine said that it struck two airbases, an oil refinery, and a defence production plant in Russia in the latest round of attacks on strategic targets in the country.