KUNMING, March 5 -- A forest fire that raged for more than 23 hours in southwest China's Yunnan Province was extinguished as of 9:35 p.m., local authorities said on Thursday.

More than 900 firefighters worked to put out the blaze that broke out in a forest in the Chenggong District of the capital Kunming City at around 10:30 p.m. on Wednesday, according to the district's publicity department.

Fire-fighters are clearing embers left from the fire.

No casualties have been reported.

The cause of the fire is under investigation.