Millard County sheriff's Sgt. Paul Robison, 57, died Saturday after he rolled his four-wheeler and became pinned between the vehicle and a cedar tree.
The crash occurred about 10:50 a.m. while Robison was on the back of Sand Mountain at Little Sahara Recreation Area, the Juab County Sheriff's Office reported.
Robison and his wife were riding in an area with steep inclines. He started riding around a hill and realized he didn't have enough momentum to make it around, said Lisa Reid, spokeswoman for the Bureau of Land Management. He tried to correct the situation but when he turned, the vehicle rolled, she said.
Robison had been a fingerprint technician for the FBI and managed the Alaska State Crime Lab before he returned to his birthplace of Kanosh and began working with the Millard County Sheriff's Office in May 1991. He was preparing to retire in August, said Millard County Sheriff Robert Dekker.
"He was a good man. He loved law enforcement, and he was a family man," Dekker said. "He was always talking about his wife, his two kids, his grandkids and his plans."
Said Dekker: "Paul will surely be missed here."
Robison's wife, who was riding on the back of the four-wheeler, flew off but survived the accident. She and her husband were not wearing helmets.
Witnesses said Robison was unresponsive after the crash, the Sheriff's Office reported. He was taken to Central Valley Medical Center, where he was pronounced dead.
Preliminary results from the state Medical Examiner's Office showed a medical condition might have contributed to Robison's death. The Juab County Sheriff's Office, the Millard County sheriff and the Medical Examiner's Office refused further comment on the medical condition.
Juab County Sheriff Alden B. Orme extended his condolences to Robison's family and the Millard County Sheriff's Office.
The Garfield County Sheriff's Office said Juliejo Ann Jackson also died after her four-wheeler overturned near Panguitch Lake on Sunday.
Jackson's husband told the Garfield County Sheriff's Office that the two were turkey hunting on the Cooper Peak trail about 11:30 a.m. when the woman reached a rocky part of the trail and lost control of her ATV.
She was not wearing a helmet and suffered head injuries, said Garfield County Sheriff Danny Perkins. Jackson died at the scene.