Beijing, China (CNN) -- The death toll from an explosion at a northeastern China coal mine rose to 92 early Sunday, state-run media reported.
Another 16 workers were still trapped underground at the mine as of 7 a.m. Sunday (2300 GMT), the Xinhua news agency reported.
About 530 miners were working when the blast occurred at 2:30 a.m. Saturday. The Heilongjiang Longmei's Xinxing mine is operated by the Hegang company.
A preliminary investigation indicates that the cause was a gas explosion, Xinhua reported.