Antonio Montowine, 31, was fatally shot in April 2018 near Bluff, Utah, on the Navajo Reservation while searching for a lost pet with his wife and 7-year-old son. The family went to their property and found a parked truck; Montowine approached the driver, later identified as Perry Maryboy, about concerns tied to illegal dumping. An argument broke out and Maryboy drew a handgun, firing once into the air. As Montowine turned to re-enter his van, a second shot struck him in the back of the head, killing him in front of his wife and child. Maryboy fled in his truck after the shooting.

Federal agents pursued a monthslong investigation. Montowine’s wife later spotted the suspect’s truck and provided a license plate number that led investigators to Maryboy’s wife and, through cellphone records, placed Maryboy at the scene. Maryboy was arrested in December 2018 and charged with second-degree murder.