Los Angeles, California (CNN) -- Evacuation orders have been lifted for neighborhoods in the region of a massive wildfire in southern California that has destroyed at least one home, officials said Friday.
Firefighters in Kern County have contained 75 percent of the blaze, and continued to conduct burnout operations and build containment lines to control the fire.
Nearly 1,670 firefighters are battling the blaze, which has burned nearly 10,000 acres, according to an update from Kern County fire officials.
At least four people have been injured in the fire, which began Sunday. In addition to the one home destroyed, an additional 150 have been threatened.
On Wednesday, Gov. Arnold Schwarzenegger declared a state of emergency in the county.
The declaration orders "that all agencies of the state government utilize and employ state personnel, equipment and facilities for the performance of any and all activities" as coordinated by emergency management officials.
For firefighters, steep ground and the active fire were major concerns, officials said. Air resources continue to play a key role in keeping the fire away from high risk areas, according to Friday's update.
The fire broke out Sunday west of Bodfish, about 100 miles north of Los Angeles. Authorities are investigating the cause. Arson is suspected, U.S. Forest Service spokesman Lee Bentley said.