A brush fire, known as the Lost Fire, is burning in the hills north of Simi Valley, but no homes are reported to be threatened. Crews report that the fire's forward progress has stopped.
The Lost Fire was reported just after 6 p.m. off Swift Fox Court, in the foothills northeast of Erringer Road.
The fire is burning in light fuel, and the wind in the area is reported to be less than 10 mph. More than 100 firefighters are on the scene, but they are hampered by the rugged terrain.
Flames were visible in parts of the Simi Valley area.