Hyderabad, Feb 5 (Reporter) Three people were killed and another injured when a compound wall collapsed on them at L B Nagar in the city on Wednesday. According to the police, the incident occurred while a group of four labourers were digging a pit to erect pillars for an apartment when a nearby compound wall suddenly collapsed. As a result, three of them died on the spot, while the injured worker was shifted to Kamineni Hospital for treatment. The victims have been identified as labourers from Suryapet. A case has been registered, and an investigation is underway, police added...////...