Five laborers were injured when the roof of an under-construction factory at Korangi Murtaza Chowrangi caved in on Saturday.
Rescue teams responded to an emergency call and found a portion of the roof crashed during construction work. Several laborers were trapped under the rubble and teams pulled out five of them till last reports came in.
The injured were shifted to hospital. Efforts were under way to rescue all those trapped and the rescue personnel sought heavy machinery to undertake the operation.