AQAP
  • Umar Farouk Abdulmutallab

    Al Qaeda in the Arabian Peninsula, or AQAP, claimed responsibility for the Northwest Airlines attack and for radicalizing Abdulmutallab, seen here in a photo released by the group.
    AQAP
  • Umar Farouk Abdulmutallab

    This image, exclusive to ABC News, shows Abdulmutallab's alleged weapon of choice: underwear, with a packet of the high-explosive PETN sewn into the crotch.
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