The body of the Heber man, whose bloody truck was found in the Payson Wal-Mart parking lot Tuesday, has been found 15 miles from his home.
A 16-year-old boy from Heber was arrested for his murder, according to the Navajo County Sheriff's Office.
Rex Lester McCarty, 80, was reported missing by his family on Jan. 6. On Jan. 16, Payson Police officers were called to the Wal-Mart parking lot when an employee reported an abandoned truck.
Officer Henry Thomason said the vehicle turned out to be McCarty's, and that blood in the truck bed pointed to foul play.
Navajo County was called and detectives and a crime scene investigator from the Department of Public Safety came to Payson to process the crime scene.
According to Navajo County officials, the same day the truck was found, processed and impounded by Navajo County detectives, they obtained information that a juvenile was involved in the disappearance.
The 16-year-old was picked up a short time later on an unrelated warrant and questioned about McCarty's disappearance. The juvenile allegedly admitted to shooting McCarty and dumping his body in the forest, officials said. The teen then led sheriff's detectives to the body.
The teen was charged with robbery and first-degree homicide, Navajo County Sheriff Gary Butler said in a press release.
Butler said the investigation is continuing and other charges may be forthcoming.