Pictures taken by the news agency AP on Friday show the difficult situation for the city's residents.
People seek refuge in a hospital while the sound of shelling bounces from wall to wall inside the hospital corridors.
"Show this to Putin"
Inside the hospital, a young couple rushes in with their 18-month-old son who was injured by shelling.
But the child is too badly injured and can not be saved.
The young couple breaks down and a doctor collapses.
The doctor turns to the AP's photographer and says into the camera:
- Show this to Putin.
The scenes are repeated time and time again, according to the AP's photographer.
In the corridors, severely injured people are cared for on temporary mattresses.