Authorities say the 44-year-old man and a 29-year-old woman were found Friday at about 2:30 p.m. inside a Phoenix apartment with gunshot wounds.
The woman was pronounced dead at the scene.
The man was taken to the hospital with serious but non-life-threatening injuries.
Police say evidence at the scene indicates the man fatally shot the victim but then became the victim of a failed suicide attempt. They say the two lived together at that apartment.
Authorities plan to book the man into jail once he is released from the hospital.