The first phase of rescue and relief operation at the site of multi-storey residential building collapse has been completed on Friday. According to the rescue officials, four dead bodies and seven injured have been retrieved from the rubble of the building. Troops of Pakistan Army, Sindh Rangers, Police and Social Welfare organisations contributed in the operation. The first phase of the operation has been completed as all the bodies and injured tapped in the rubble of the building have been retrieved, said the rescue officials. In the second phase of the rescue and relief operation, the debris of the building will be disposed-off and in the third phase, the causes behind the building collapse and responsible hands would be determined.