Fire investigators say a brush fire which blackened about 50 acres of land in Ventura County appears to have started accidentally.
Three spot blazes were reported at about 2:45 Tuesday afternoon on the north side of Highway 101 near Camarillo Springs.
They grew into one fire, which was named the Grade Incident. Firefighters aided by helicopters helped slow the spread of the fire, which put up a huge cloud of smoke. The growth of the fire was stopped in about 90 minutes, but firefighters were on the scene overnight doing mopup work.
No structures were threatened, and Highway 101 remained open.
