Thirteen miners are missing after a coal mine was flooded four days ago in northeast China's Heilongjiang Province, local authorities said on Tuesday.

The flooding took place at about 2:00 AM on May 30 at the Hengda Coal Mine in Jidong County, Jixi City, and the coal mine owner had said no miner was trapped, said a spokesman of the Jixi work safety bureau.

Currently, rescuers are speeding up efforts to pump water out of the coal mine, the spokesman said.

(Xinhua News Agency June 3, 2008)