Four miners trapped in a caved-in coal mine in north China's Inner Mongolia Autonomous Region have been confirmed dead, while another remained missing, said a latest news release from the local rescue headquarters.

Rescuers retrieved bodies of the four miners in the Yuanlin Coal Mine in the region's Xianghuang Banner and continued to search for the missing one, according to the report.

The coal mine collapsed at 3:10 a.m. Friday, leaving 12 miners trapped underground. By Sunday morning, seven of them have been rescued.

The rescued miners are being treated in a hospital about 40 km away from the mine and their injuries are not life-threatening, the report said.

Thirteen miners were working underground when the accident occurred, and only one escaped. Later that day, rescuers managed to get in touch with seven trapped miners and pulled them out of the pit.