Cal Fire investigators are searching for two men in connection with an Oct. 4 fire at the Sonoma County Crane Creek Regional Park that burned 159 acres of park and pastureland.

Witnesses said they saw two "white male adults" fleeing the area immediately after the fire started, according to a Cal Fire statement. The fire started in the vicinity of the disc golf course.

One of the men is described at 20-to-30 years old, about 5-feet-11 inches, heavy build, reddish brown hair with a chest-length beard. Officials said the other man was about the same age, 5-feet-8 inches with dark hair, wearing shorts and a yellow shirt. Both were seen playing Frisbee golf in the park.

The men left the area in a mid-1980s 2-wheel drive white Toyota pickup truck with an extended cab. The truck may have had a factory fender-to-tail graphic and a reggae-type sticker in the driver's side rear window, Cal Fire said.

The truck was last seen turning north onto Pressley Road from the park parking lot.

Cal Fire said anyone with information about the incident should call fire investigators Chris Anthony at (530) 708-2720 or Kyle Steis at (707) 337-7259.