Anderson Cooper and John King report on the significance of the photos showing debris from the pressure cooker and fabric from the bag used in the Boston Marathon bombings. Investigators will examine the evidence for fingerprints or DNA or use the serial number to try to track down who's responsible.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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