A wildfire burning just northeast of Cave Creek in the Tonto National Forest has rapidly grown to more than 9,000 acres with zero percent containment as of Sunday.
The Sears Fire had burned 9,200 acres since it first sparked on Friday afternoon. Firefighters are continuing to patrol and monitor the blaze.
Tonto National Forest officials said suppression efforts were focused on the northeast perimeter of the fire, south of Humboldt Mountain where the fire is most active.
Some powerlines in the area have been impacted by smoke, and others have been de-energized.
The fire first sparked near Forest Service Road 24 and the Sears Kay Ranch around 2:45 p.m. Friday.
It is burning in grass and brush. The cause of the fire is under investigation.