Iren Byers, a 20-year-old Arizona man, has been arrested in connection with a shooting spree that left four people dead and one injured. The Mesa Police Department responded to the murder of a 41-year-old man on Friday night and the shooting of a 36-year-old woman on Saturday morning. The woman is in stable condition and will undergo surgery for serious injuries. Byers is being held in the Maricopa County Jail and is scheduled to appear in court on Monday.