More than 150 people were struggling to put out a forest fire in southwest China's Yunnan Province, local government said Saturday.

The blaze broke out at 3 p.m. Saturday in Liuzhao Village, Zhela Township in Yanshan County, said a spokesman of the county government.

Fire fighters were still trying to quench the fire at 10 p.m..

No casualties have been reported. The cause of the fire is being investigated.