Authorities have identified a 14-year-old Utah boy who was killed Friday in an all-terrain vehicle accident.

Zane McQuivey, of St. George, was injured when the “side-by-side off-highway vehicle” he was driving crashed in the Purple Hills area of Warner Valley, southeast of St. George near the Arizona border, according to the Utah Division of Parks and Recreation.

The boy and his 38-year-old passenger are believed to have been traveling slowly up a hill “when the vehicle attempted a turn and rolled,” Lt. Regan Wilson of the Utah Division of Parks and Recreation said in a statement. Neither the teen nor the adult are believed to have been wearing helmets or seatbelts.

McQuivey was flown by helicopter to St. George Regional Hospital, where he later died. The passenger is expected to recover from his injuries.

“Zane was a kind and happy 14-year-old boy,” the McQuivey family said in a statement. “He was an eighth grader at Crimson Cliffs Middle School. He will be missed greatly by his family, friends and community. We appreciate the outpouring of love and support that we have received. We are thankful for the DonorConnect program so that Zane is able to continue to help others”

The accident remains under investigation.