The death toll in building collapse in Karachi's Lyari area has climbed to 16 as the relief workers retrieved four more dead bodies from the debris of the building. Around two dozen people are still said to be trapped under the rubble, according to a report of Pakistan's ARY News. At least 15 injured have been transferred to a hospital for medical aid. A five storied building collapsed in Musa Lane area of Lyari on Thursday.