More than 100 firefighters from the Los Angeles County and L.A. city departments were on scene.
Structures were threatened but no damages were reported.
No injuries were reported.
Traffic on the freeway was affected.
110+ firefighters battle Simi Valley brushfire
SIMI VALLEY, Calif. The fire was reported just north of the 118 Freeway near Rocky Peak Fire Rd. It grew to about 10 acres as it burned light to medium brush.
