FLAGSTAFF - Two cousins who accidentally started the largest wildfire in Arizona history will have to pay more than $3.7 million in restitution to those whose homes were destroyed or suffered other losses, a federal judge said Thursday.

Attorneys for David and Caleb Malboeuf said it's unlikely their clients can pay the full amount in their lifetimes. They asked U.S. Magistrate Mark Aspey to set the monthly payments for Caleb Malboeuf, of Benson, at $500 and $250 for David Malboeuf, of Tucson.

Aspey is expected to issue an order next week outlining the payment schedule and how victims will be prioritized.

The Malboeufs pleaded guilty to leaving a campfire unattended and failing to clear brush from around it. They will be on supervised probation for five years.

The Wallow Fire burned 840 square miles in Arizona and New Mexico for about a month last summer.