On the night of April 23, 2017, 28-year-old Angel Valenzuela was sitting in a vehicle with two younger male companions in the parking lot of Mayfair Manor apartments at 5180 East 22nd Street in midtown Tucson. Around 9:30 p.m. a man approached the car and, after a verbal confrontation that investigators described as gang-related, produced a handgun and fired multiple rounds into the occupied vehicle at close range. All three occupants were struck; Angel was pronounced dead before arrival at the hospital. The two surviving passengers suffered serious but non-life-threatening injuries and were expected to survive.

Tucson police treated the shooting as a targeted ambush and launched a homicide investigation led by gang detectives. Investigators developed a general suspect description and vehicle information and later focused on 24-year-old Tucson man Isaac Cisco. Officers arrested Cisco weeks after the shooting and recovered a handgun on the driver-side floorboard of his vehicle; ballistic and forensic testing tied that gun to the rounds fired into the car. Prosecutors charged him with first-degree murder and multiple counts of aggravated assault, and a jury later found him guilty of first-degree murder and four counts of aggravated assault for the attack that killed Angel.

Did anyone in Tucson know Angel or see activity near Mayfair Manor that night?