BREA, Calif. -- Orange County officials say they don't believe a 399-acre fire in Brea will force an evacuation of a nearby housing community.
Fire Chief Wolfgang Knabe says the fire is now 50 percent contained and is expected to be fully contained late Thursday or early Friday.
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Knabe says he doesn't expect to issue evacuation orders to residents of the 250 homes in Olinda Village.
Firefighters also put down flames near cell phone towers and radio transmitters in another area of the fire.
Winds remain mostly calm but are expected to pick up and fuel the flames when the sun sets.
The cause of the fire is under investigation.
Two earlier one-acre fires in Los Angeles County, in Malibu and near Pinion Hills, were knocked down with no structures damaged.