Federal probe of 1921 Tulsa Race Massacre says 'no avenue' for criminal case in connection to attack / First Tulsa Race Massacre victim identified in mass grave honored with memorial / Justice Department opens cold-case investigation into 1921 Tulsa race massacre / 3 more sets of remains tied to the 1921 Tulsa race riots found with gunshot wounds / Latest search for 1921 Tulsa Race Massacre victims ends with 3 more found with gunshot wounds / 3 More Victims of 1921 Tulsa Race Massacre Found With Gunshot Wounds / More remains found with gunshot wound in search for 1921 Tulsa Race Massacre graves / Third set of remains found with gunshot wound in search for 1921 Tulsa Race Massacre graves