Tracking Criminals SEATTLE, WA (KPLU) - An Arizona man runs away with a 13-year-old girl. After months of pursuit, the FBI tracks him down yesterday in the Seattle Public Library because of e-mails he and the girl sent from there. You might wonder just how police were able to do that. The FBI says it never reveals its investigative techniques. So KPLU Law and Justice Reporter Paula Wissel turned to someone who follows cyber trails for a living. 1:28

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