A wildfire is burning out of control in a remote mountainous area east of San Diego.
A U.S. Forest Service spokesman says the fire quickly burned 100 acres of heavy vegetation and has the potential to grow to 10,000 acres.
Air crews are attacking the flames, but ground crews can't reach the fire because there are no roads leading to it.
No evacuations have been ordered, though officials say the fire is spreading north with the potential to threaten the tiny villages of Corte Madera and Pine Valley, about 40 miles east of San Diego and just north of the U.S.-Mexico border.
The cause of the fire is not known.
Earlier today, fire crews contained a 430-acre wildfire in Riverside County.
It was caused by sparks from a stolen car.