SANTA CLARITA, California — Crews continue to build containment lines around a wildfire burning for a fourth day in the hills and mountains around Interstate 5 north of Los Angeles.
State fire officials say the blaze near Frazier Park along the border of Kern and Ventura counties is 80 percent contained Sunday after consuming nearly seven square miles.

The Grand fire burns into the Los Padres National Forest near Gorman, Calif., where the blaze charred more than 3,000 acres of wild lands on Wednesday, May 15, 2013. Wednesday, May 15, 2013. Cooler temperatures and lighter winds are helping hundreds of firefighters combat a 3,000-acre wildfire. (AP Photo/Los Angeles Times, Luis Sinco) OUTS; ORANGE COUNTY REGISTER, LA DAILY NEWS, VENTURA COUNTY STAR, INLAND VALLEY DAILY BULLETIN, LA OPINION), SOMETIMES: -CALON (LONG BEACH PRESS-TELEGRAM) NO FORNS, NO SALES, MAGS OUT, MANDATORY CREDIT
The fire that broke out Wednesday is not threatening any homes or buildings. But officials say containing it could be a long, difficult task because it's burning in rugged and hard-to-reach terrain.
The cause is under investigation.
A second fire about 30 miles to the south was fully contained Saturday.
That blaze, which broke out Friday, briefly threatening an elementary school and about 20 homes. It burned just over one square mile of dry brush.
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