CHANGSHA - At least seven people were killed and one more injured after a colliery gas burst accident in Central China's Hunan province Sunday evening, local government sources said Monday morning.

The accident occurred at around 6:23 pm Sunday at Minxing Coal Mine in Zhonglian township of Lengshuijiang city, when 15 miners were working underground. Eight people, including one injured, escaped from the scene.

Rescue work finished at around 5:00 am Monday, finding seven people dead.

The cause of the accident is being investigated.