Five people have been confirmed dead and another two injured after a cave-in in a coal mine shaft Saturday in southwest China's Yunnan Province, the local government said Sunday. The accident happened at 3:19 p.m. Saturday in a pit of the Yunwei Group affiliated to the Yunnan Coal Chemical Industry Group Co., Ltd. in the Qilin District of Qujing City. Seven miners were trapped underground and another 16 escaped after the accident happened, Xinhua quoted an official with the Qilin District as saying. As of early Sunday morning, rescuers had retrieved five bodies. Another two rescued miners were in hospital but their injuries were not life threatening, he said. The cause of the accident is still under investigation.