Caleb Joshua Malboeuf And David Wayne Malboeuf Charged For Arizona Wildfire (VIDEO)

08/24/2011 04:14 pm ET | Updated Oct 24, 2011

PHOENIX (AP) -- Federal charges have been filed against two cousins accused of causing the largest forest fire in Arizona's history.

The charges were announced Wednesday by the U.S. attorney's office against Caleb Joshua Malboeuf and David Wayne Malboeuf. They include leaving a fire unattended and unextinguished, and failure to maintain control of a fire that was not a prescribed fire that damaged a National Forest System.

The Wallow fire burned more than 538,000 acres in eastern Arizona and New Mexico last spring.