Maricopa County Sheriff's Office says a man is in jail after a deadly shooting in Guadalupe.
Ramon Aragon Contreras, 44, was booked into jail after the shooting on Sunday night.
According to documents, Contreras went to a police substation and turned himself in after the incident, saying he had shot someone.
Deputies went to the address provided by Contreras and located a dead man in a truck.
Contreras told deputies that the victim was named Antonio and that they had been living together. The two had gotten into a fight after Antonio insulted his girlfriend.
Contreras said he retrieved his gun and shot Antonio three times, killing him.
He is facing one count of first-degree murder.