The blaze was reported to be six acres in size around 3:47 p.m. near North San Gabriel Canyon and Old San Gabriel roads.
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According to authorities, crews were able to tame the fire and stop it's progression around 4:28 p.m.
Helicopters from the county fire department were dispatched to the scene and water collected from the nearby lake helped extinguish much of the flames.
No evacuations were issued and no injuries were immediately reported.
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The cause of the blaze is unknown.