Track Post and Point pulls across the state

The Post Fire broke out Saturday afternoon along Interstate 5 in Gorman, about 60 miles northwest of Los Angeles, according to the California Department of Forestry and Fire Protection. On Monday morning, powerful wind gusts caused the flames to spread across 15,610 acres of mountainous land.

The investigation is looking into the causes of the fire.

Fire crews contained 8% of the fire, which destroyed a commercial structure, according to Cal Fire. Limited visibility hampered efforts to establish a perimeter on the east side of the fire.

The National Weather Service has issued a red flag warning for the I-5 corridor in northwest Los Angeles County due to the dangerous combination of high temperatures, low humidity and wind gusts of 30 to 50 mph scheduled until Monday afternoon and possibly Tuesday.