Da Nang authorities worked round the clock to put out a blaze that claimed 20 hectares of protected pine trees.
The fire started in Nam Hai Van forest on Thursday afternoon. Firefighters spent the whole night battling the flames until it was extinguished, early the following morning, according to a Tuoi Tre report published on Friday.
Huynh Van Thang, deputy director of the Da Nang Department of Agriculture and Rural Development, said the firefighters could only access the flames at night as intense wind and heat hindered their daytime efforts.
Nearly 500 fire fighters, soldiers and forest wardens participated in the fight and were supported by three fire trucks.
Following the fire, more than 400 people were assigned to guard at the forest.
Investigations showed that the inferno began with a two hectare blaze in Thua Thien-Hue Province. Strong winds pushed the flames towards Da Nang, according to the paper.
Thang said the forest fire may have been ignited by trespassers.
Following the fire, Da Nang authorities have closed the forest.