Firefighters are working to contain a wind-driven brush fire that broke out near the Jack Bones Equestrian Center in Castaic Monday morning.
The blaze, dubbed the Equestrian Fire, started about 3:40 a.m. just off the 5 Freeway near Tapia Canyon Road.
Three water-dropping helicopters could be seen assisting in the firefight Monday morning. Winds in the area were blowing at about 25 mph.
Aerial video from Sky 5 showed the 5 Freeway remained open to morning commuters.
By 7 a.m., crews appeared to have gained an upper hand on the fire but could still be seen hours later searching for hot spots that could flare up amid the windy conditions.
The fire had scorched 75 acres and was 40% contained as of about 10 a.m., Los Angeles County Fire Department officials confirmed.
The cause of the fire is still under investigation.
Video shows several power lines are strung across the area.
No injuries have been reported.
Smaller brush fires also broke out Monday morning in Eagle Rock, El Sereno and the Sepulveda Basin. Fire crews appeared to quickly get the upper hand on those blazes.
The fires are sparking as much of the region is under critical fire weather conditions.
Forecasters are expecting gusty winds to combine with low humidities and high temperatures Monday. A red flag warning is in place for parts of Los Angeles and Ventura counties.
Castaic is located northwest of the city of Santa Clarita.
Check back for updates on this developing story.
