Marte Alcorn, 40, was shot and killed in the early morning hours of March 11, 2023, in the courtyard of an apartment complex along the 1000 block of East Benson Highway in Tucson. Officers arrived after a 911 call just before 2:40 a.m. and found Alcorn suffering from gunshot trauma; lifesaving measures were performed but he was pronounced dead at the scene. His next of kin were notified and the case was turned over to homicide detectives.

Detectives established that Alcorn had been involved in an altercation shortly before the shooting and developed a physical description of a suspect from witness accounts and other evidence, but initially could not identify that person. On June 8, 2023, police detained 26-year-old Brennen Virgil Moristo in Downtown Tucson and later linked him to the March 11 shooting, charging him with second-degree murder and booking him into the Pima County Jail on a reported $1,000,000 bond. Authorities have not publicly released a detailed motive beyond the indication the shooting followed the altercation. If anyone saw the confrontation or has information about the events that night, please contact Tucson police or submit a tip to the local crime line.