A fire broke out Wednesday night inside a coal mine in China, leaving at least 36 people trapped underground, officials said on Thursday.
The incident took place in eastern Shandong province, Xinhua reported citing the State Administration of Work Safety.
An air compression device 225 metres underground caught fire, trapping the miners working in the area, it said.
An expert team has rushed to the scene and a rescue operation has begun.
The coal mine had completed a technical revamp in June 2010 to expand production capacity to 150,000 tonnes a year.