Marte Alcorn, a 40-year-old male whose race or ethnicity has not been publicly specified in available reports, was fatally shot in the early morning hours of March 11, 2023, at an apartment complex along the 1000 block of East Benson Highway in Tucson, Arizona. Shortly before 2:40 a.m., Tucson's Public Safety Communications Department received a 911 call reporting a shooting at the complex. Responding officers from Operations Division South found Alcorn in the courtyard area of 1025 E.
Benson Highway suffering from gunshot trauma. They immediately attempted life-saving measures using their individual first aid kits and continued their efforts until Tucson Fire Department personnel arrived, but Alcorn was pronounced dead at the scene. His next of kin were notified, and the case was turned over to homicide detectives for a full investigation.
Detectives from the Tucson Police Department's Homicide Unit determined early on that Alcorn had been involved in an altercation just prior to the shooting. From witnesses and other evidence, investigators developed a physical description of a suspect but were initially unable to determine that person's identity. The department described details as limited and publicly appealed for information, asking anyone who might have seen the confrontation or the shooter to contact 911 or submit tips through the local 88-CRIME line. During this period, the case remained active and unsolved, with media outlets reporting only that Alcorn had been found with gunshot wounds at the complex and that police were searching for the person responsible.
A major development came on June 8, 2023, when Tucson police detained 26-year-old Brennen Virgil Moristo in Downtown Tucson in connection with a separate investigation. During follow-up interviews and further examination of evidence, homicide detectives linked Moristo to the March 11 shooting and charged him with second-degree murder in Alcorn's death. He was transported to and booked into the Pima County Jail, where he is reported to be held on a $1,000,000 bond. News reports and case-tracking sites describe the homicide as solved in the sense that a suspect has been identified and arrested, though authorities have not publicly released a detailed motive beyond the indication that the shooting followed an altercation at the apartment complex. As with all criminal charges, Moristo remains a suspect and is presumed innocent unless and until proven guilty in court.
