Investigators from the U.S. Forest Service are asking for help from the public in determining the cause of a wildfire that has burned nearly 2.5 square miles (6.5 square km) in the San Bernardino Mountains east of Los Angeles.
The Forest Service issued a statement Wednesday looking for anyone who might have seen anything when the fire started Monday near the Pacific Crest Trail.
Crews contended with another day of oppressive heat as they tried to beat back the blaze that is just 10 percent contained.
Some 500 firefighters are on the line, aided by a fleet of water- and fire retardant-dropping aircraft
Evacuation orders were lifted Tuesday afternoon for three rural streets.
The fire is burning in tinder-dry brush and it gained strength as temperatures soared to near 90.