Sixteen people died on Sunday in a coal mine in southwestern China because of excessively high levels of carbon monoxide, authorities and state media said.
A total of 17 people were trapped in the mine located just outside the city of Chongquing. One person was taken to a hospital, and the others showed no sings of life, the Chongquing municipal government said in a social media post on Sunday.
A conveyor belt caught fire in the early hours of the morning, state news agency Xinhua cited the government as saying, which produced dangerous levels of carbon monoxide.
The cause of the accident is still under investigation, said the Qijiang district government on social media platform Weibo.
The mine in Qijiang district belongs to a local energy company, Xinhua said, citing the district government.