Twenty-one people remain trapped, and eight others have been rescued after a coal mine flooding in northwest China's Xinjiang Uygur Autonomous Region, local authorities said on Sunday.
All 21 trapped miners have been located as of Sunday morning. They were scattered between three different operating platforms 1,200 meters below ground. Rescue workers are actively attempting to contact the trapped miners.
Officials said the eight rescued were not injured.
Earlier, China's Ministry of Emergency Management said it had sent experts and rescue teams to the site for assistance.
The flooding occurred at around 6:10 p.m. on Saturday when the Fengyuan mine in Xinjiang's Hutubi County, the Hui Autonomous Prefecture of Changji, was undergoing a technological upgrade. Twenty-nine miners were working underground at the time.
The accident has cut off power and communication systems, local authorities said, adding that the complex topography has complicated the rescue operation.
Three sets of drainage equipment are currently pumping out water at speeds of 450 cubic meters per hour. A fourth set is being installed and is expected to double efficiency once in operation.
Air supply is also being provided.