WHITERIVER, Ariz. - Wildfire crews are fighting the Rattlesnake Fire burning in northern Arizona.
As of Saturday afternoon, nearly 500 firefighters are working to put out the blaze.
The fire began April 11 and has grown to nearly 15,000 acres since then. Crews have about 24 percent containment, according to authoritites.
Fire crews are also burning land in front of the Rattlesnake Fire trying to contain the main blaze.
The fire has increased over 4,500 acres on the Fort Apache Reservation land, which is southeast of Whiteriver, according to crews.
For the first time Tuesday night, the fire was mapped from the air, which provided an accurate determination of the size of the fire.
There are areas inside the fire's perimeter that have not been burned, crews said.
A red flag warning is in place across Arizona and campfires are prohibited.
Investigators are still working to determine the cause of the fire.