An Arizona man has been accused of a stunning murder spree in which he allegedly killed nine people in three weeks — a rampage that would make him one of the most prolific serial killers in the state’s history. Cleophus Cooksey Jr., 35, was arrested on Dec. 17, 2017, after police responded to a call of shots fired in Phoenix. When officers arrived they found Cooksey’s mother and stepfather dead. Cooksey was not linked to the other homicides until he was in custody.