Late on August 21, 2023, friends of 25-year-old Harry Nguyenhuy Doan reported concerns after they could not reach him, prompting a welfare check at the apartment complex on the 3030 block of North 7th Street in Phoenix. Officers found Doan deceased inside the unit with multiple gunshot wounds.

Investigators focused on a man with a personal connection to Doan. Detectives learned Doan was involved with a woman whose former boyfriend, 26-year-old Rene Penaloza, had reportedly made prior threats against Doan. Probable cause was developed linking Penaloza to the killing. With help from the Department of Public Safety, officers located Penaloza in the Tucson area during a traffic stop and took him into custody; he reportedly admitted involvement and was booked on multiple charges, including murder.

Did anyone in Phoenix or Tucson know Doan, his whereabouts that night, or have information about his relationship circle that could help explain what happened?