HEFEI - Ten people were confirmed dead and three others injured in two unrelated coal mine accidents on Thursday in east China, local authorities said.

Seven workers died after being crushed and three others were injured by falling cement from a coal mine's ventilation well that was under construction in Huoqiu County in the eastern province of Anhui at about 4:45 am Thursday, the county government said in a statement.

The three injured workers are being treated at a hospital and are in no immediate danger, it said.

The Anhui provincial government has set up a team to investigate the accident.

In another accident, the bodies of three trapped coal miners were found Thursday afternoon, five days after a mine shaft collapsed in the city of Ruichang in Anhui's neighboring province of Jiangxi, the city government said in a statement.

Investigations into the cause of the shaft collapse are still underway.