The Ukrainian Interior Ministry has warned civilians in the capital Kyiv that fighting is taking place on the streets.
In a Facebook post Saturday, the ministry said:
"Active fighting is taking place on the streets of our city. Please stay calm and be as careful as possible!
If you're in the shelter, don't leave it now.
If you are at home -- do not go close to the windows, do not go to the balconies. Hide indoors, for example in the bathroom, and cover yourself with something that will prevent injury from bullet fragments.
If you hear sirens ("Air Alarm" signal) -- go immediately to the nearest shelter!"