( CNN ) -- Seven miners were killed Saturday in an explosion at a coal mine in southwest China , state-run media reported . The blast occurred at about 2 a.m. local time at the Huangshuiba Coal Mine in the town of Yumo in the Guizhou Province , where 50 miners were working , the state-run Xinhua news agency reported , citing local officials . Rescuers pulled 45 miners out of mine , including two who later died from injuries sustained in the blast , the news agency reported . The bodies of five miners were found near the blast site , according to Xinhua . The cause of the accident was under investigation , authorities said , according to the news agency . CNN 's Elwyn Lopez contributed to this report .
A blast occurred about 2 a.m. at a coal mine in China , state media reports . 50 miners were working at the time of the blast , state media reports . The bodies of Two miners were found near the blast site , CNN reports . five miners died later of their injuries , the news agency .