Nathan Callahan, 18, was killed at a crowded apartment pool party on South Shannon Road in Tucson on June 26, 2022. Attendees numbered perhaps 300, and what began when Nathan accidentally bumped a group quickly escalated after his apology. He was assaulted, tried to move away to rejoin a friend, and was pursued; someone in the group produced a firearm and shot him in the back of the head. A friend was also wounded. Nathan was found dead near the swimming pool and pronounced at the scene.

The large, panicked crowd dispersed before police arrived, complicating the Tucson Police Department’s investigation. Nathan’s family has publicly appealed for witnesses and a cash reward has been offered for information leading to an arrest.

If anyone at that party or anyone with relevant information has not yet spoken to investigators, please contact the Tucson Police Department.