text:  Ambulance and emergency workers are at the scene helping to evacuate patients and injured people. Some children are reported to have been trapped under the rubble. The smoke is still rising above the shattered building. Parents have arrived at the scene trying to find out what happened to their children. Rescue works are repeatedly interrupted by air raid sirens. Many are worried about a possible double-tap attack where Russia could launch another attack to hit the same target in a short period of time.