Firefighters early Thursday were battling a brush fire near the Santa Susana pass and were urging people to avoid the area.
The fire broke out near Lilac Lane and Santa Susana Pass Road, according to the Ventura County Sheriff's Department.
Other agencies, including the Los Angeles Fire Department, were helping fight the blaze, which was being fanned by winds, officials said.
The fire could been seen from the 118 Freeway. It's unclear whether homes were threatened.