Forest fires that had been brought under control ripped through mountains again this week after reigniting in central Thailand.

Drone video shows the inferno burning through woodlands in the Khao Makha Thong and Khao Tabaek areas of Nakhon Nayok province on April 11.

The fires started in March but had been brought under control by April 2. However, they rekindled at around 5 PM on Monday.

Provincial governor Bancha Chaowarin ordered firefighters to respond to the blaze but personnel had to wait until morning as the path was treacherous at night.

High winds had caused the fires to spread quickly, with firefighters monitoring the bases of the mountains to keep them from breaching residential areas.

The Ministry of Natural Resources and Environment deployed a helicopter on April 11, while more than 100 firefighters were also dispatched to combat the fire.

Fire breaks were constructed around the Khao Yai National Park, a UNESCO World Heritage Site.

As of April 11, the fire had razed an estimated 40 to 80 acres of forest.

The blaze, reportedly sparked by lightning during a summer storm, had engulfed the Khao Chaphlu and Khao Laem mountains in the area late March, and were brought under control on April 2 before reigniting this week.