With two more miners being confirmed dead, the death toll of the rock burst accident at a coal mine in east China's Shandong Province has risen to 21, local authorities announced Monday afternoon.

Emergency personnel surround a dazed worker as he is rescued from a coal mine accident in East China's Shandong province on Oct 21, 2018. (Photo: Xinhua)

Among the miners trapped after the rock burst, only one survived, authorities said.

The accident occurred at Longyun Coal Mining Co. Ltd. in Yuncheng County on Oct. 20. A total of 22 people were trapped in a tunnel after coal fell at both ends from the rock burst.

Rescue work has been completed, and the cause of the accident is still under investigation.