Police say the shooting took place after the 36-year-old gunman got into a fight with a man and 30-year-old woman. DETROIT – A gunman who killed a man and injured a woman in a shooting on Sunday is hospitalized and being treated for a self-inflicted gunshot wound, police say. Police say the shooting took place after the 36-year-old gunman got into a fight with the man and 30-year-old woman. Police say that while the man was shooting at the two he sustained a self-inflicted gunshot wound. Anyone with information is asked to call the Detroit Police Department’s Homicide Unit at 313-596-2260 or Crime Stoppers by dialing 1-800-Speak-Up.