FUZHOU -- Seven workers were confirmed dead after a coal mine accident in Datian county, East China's Fujian province, local authorities said on Friday.

The incident occurred at the Shuijingkeng Mine, operated by Fujian Guangfeng Mining Co Ltd, with underground workers reported missing at around 11 pm on Thursday, according to the county government office.

Rescue efforts were immediately launched. One injured miner managed to escape on his own, while the seven trapped individuals were brought to the surface by 4:10 am on Friday — but showed no signs of life.

Emergency response work has concluded, while post-accident handling is still underway. The cause of the incident is under investigation.