GLENDORA, Calif. (AP) — Structures are burning in a wildfire threatening dozens of homes in dangerously dry foothills of Southern California's San Gabriel Mountains.

Television images showed several structures engulfed in flames fanned by gusty Santa Ana winds that spit embers across neighborhoods Thursday morning.

Evacuations are ordered for houses at the edge of the fire.

The blaze has charred at least 125 acres above a neighborhood abutting a canyon of Angeles National Forest, just north of the city of Glendora. The wilderness area is about 25 miles northeast of downtown Los Angeles.

Los Angeles County Sheriff's Sgt. Raymond Roth says police are questioning two persons of interest detained near Colby Trail, where the fire was believed to have started. Roth stresses that they were not suspects.

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