ACTON, Calif. (KTLA) -- Fire crews have fully contained a 100-acre brush fire near Hubbard Road and Escondido Canyon Road in Acton.
The fire erupted just after 11:00 a.m. Thursday in a sparsely populated area and burned about 52 acres.
About 200 firefighters battled the blaze on the ground.
One firefighter was injured, but not seriously.
Four water-dropping helicopters were used to fight the fire from the air.
Fire officials say they believe the fire was started by a short circuit from an oil well.