The Warm Fire in Castaic that burned about 300 acres was the result of arson, according to the Los Angeles County Sheriff’s Department’s investigators.

The Warm Fire began around 3:30 p.m. Sunday, Aug.16 in the area near the Warm Springs Rehab Center on Lake Hughes Road in Castaic, according to Angeles National Forest officials.

“We’re working with several other agencies including the Forestry Department to identify the suspect or suspects and to (further) determine the cause,” Sgt. Robert Boese with the LASD Arson and Explosives Unit.

No civilian injuries were reported, according to ANF.

Previous Story: Warm Fire In Castaic Is 100 Percent Contained

During the fight to contain the fire, two firefighters were relived of their duties due to injuries and about 170 personnel worked to extinguish the fire, while battling rough and steep terrain.

The fire, which was located near Lake Hughes Road, burned six structures, according to ANF officials.

The Los Angeles County Fire Department employed two helicopters and a DC 10 Air Tanker were used to fight the fire.

The Los Angeles County Sheriff’s Department and the Forestry Department are continuing their investigation to identify the suspect or suspects, and cause.