At least 18 workers were killed in a gas leak at a coal mine in China's Hunan province, local media reports said.
The incident happened on 7 May when miners were working in the shaft of the mine in Hunan province's Youxian County, Xinhua News agency reported.
Thirty-seven miners have been rescued in the incident.
Six officials, including a deputy county chief, have been sacked after the incident.
Coal mine accidents are frequent in the region as the mines lack enforcement of safety standards.