Detailed text transcripts for TV channel - CNN - 20180319:21:54:00
Have been an attempt to throw investigators off the trail. >> previous victims may have been targeted and now he wants to put time and distance between the targeted victims and make it appear that he's out, just to randomly victimize anyone. so it could be a game-playing technique on the bomber's part. >> reporter: no matter the motive, investigators say their most urgent concern now is the bomber's change in tactics, because the bomb overnight was not easily noticed. >> we're very concerned that with trip wires, a child could be walking down a sidewalk and hit something. >> reporter: overnigh...
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