Cleophus Cooksey Jr., 35, was arrested on December 17 after fatally shooting nine people over a three week span.
Tampa police said a fourth person was fatally shot Tuesday in what many fear was a serial killing.
A killer targeting victims of color remains on the loose, terrifying a small suburban neighborhood outside of Phoenix, Arizona.
Since April, five men and women between the ages of 12-32 were killed in Maryvale, a neighborhood in Phoenix.
