Riley joins investigation into death of 3-year-old Riley , slain in that day . Riley Fox was reported missing from home ; her body was found 2004 . Authorities initially charged father in the killing , but DNA exonerated him . Attorney for family blasts law enforcement for lack of progress on case .
FBI joins investigation into death of 3-year-old Riley Fox , slain in 2004 . Riley was reported missing from home ; her body was found that day . Authorities initially charged father in the killing , but DNA exonerated him . Attorney for family blasts law enforcement for lack of progress on case .