Russia also conducted air raids on Kyiv in the early hours of Tuesday morning with Iranian-made Shahed drones.

“The air raid alert is on! Air defence systems engaged in the region on approach to Kyiv,” Serhiy Popko, head of the military administration for the Ukrainian capital, said on the Telegram messaging app early on Wednesday morning.

The Kyiv military administration urged people to stay in shelters until the raids were over.

Witnesses in Kyiv heard blasts resembling the sound of air defence systems intercepting air objects, the Reuters news agency reported.

Russia also conducted air raids on Kyiv in the early hours of Tuesday morning with Iranian-made Shahed drones. Ukraine said it shot them all down.

Local media outlets conveyed messages from authorities on Tuesday telling people to remain in air raid shelters and to observe “information hygiene” by not taking photos or recording video footage of Ukrainian air defences at work. Such images can be valuable to the Russian military.

This is a developing story. More to follow soon.