UPDATE: A TRUCK driver has escaped unharmed after his truck caught fire at the top of Cunningham's Gap.
Wally Black said he "smelt something" as he drove through Cunningham's Gap towards Fisher Park.
After initially thinking the smell was from another truck, Mr Black realised his own truck, a milk tanker, was on fire.
"I pulled over and my truck was on fire," Mr Black said.
"It was burning when I got out.
"Someone grabbed a fire extinguisher (from Pacific Petroleum's at Fisher Park) and helped put it out."
The fire caused significant damage to the front of the cab, and Mr Black said he was unsure how the fire started.
"I don't know what caused it, I don't know if it was the wiring or something.
"I've never seen anything like it."
The Cunningham Hwy was unaffected by the incident.
Emergency services are racing to the scene of a truck fire near Fisher Park Truck Stop on the Cunningham Highway.
It's unknown at this stage the severity of the fire but it's likely there will be delays.
More as it comes to hand.