TAIYUAN - At least 11 miners, rather than nine as estimated earlier, were confirmed to have been trapped under a coal mine that was flooded early Friday in north China's Shanxi province, a local official said Saturday.

About 230 professional rescuers are racing to pluck the miners out of Shanfu Coal Mine, in Xiangyuan county of Changzhi city, according to Xu Jianjun, deputy secretary of the county's committee of the Communist Party of China (CPC).

Xu said nine miners were from Shanxi province while two others were from other provinces.

Floodwater swept into the mine around 1 am Friday morning. Sources said production at the mine had been suspended prior to the accident as related licenses have expired.

An investigation into the accident is under way.