HEFEI, Sept. 23 -- A flour mill exploded in China's Anhui Province on Tuesday, injuring eight workers, said local fire authorities.

The injured workers have been hospitalized and are not in eminent danger.

The explosion ripped through the third floor of the three-story building, shattering glass, according to the rescuers.

The flour mill employs 150 people, but only 20 were in the section where the explosion occurred.

The cause of the explosion is still being investigated.