FLAGSTAFF, AZ - The former Cochise County sheriff had been traveling at 62 mph along a dirt and gravel road in northern Arizona when he lost control of his vehicle and died .
A report released Monday by the Coconino County Sheriff's Office says the black box in Larry Dever's vehicle also shows that the seat belt was unbuckled.
Dever was on his way to meet family members for a camping and hunting trip at White Horse Lake on Sept. 18 when his pickup rolled.
The U.S. Forest Service road he had been driving on near Williams has no speed limit. Under state law, motorists are to drive at a speed that's reasonable and prudent on Forest Service roads without posted limits.
The medical examiner's office says his death was accidental and caused by multiple injuries.