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Canadian official identifies dead Ottawa gunman as Michael Zehaf-Bibeau

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Associated Press
FILE - In this file photo of Feb. 26, 1993, the twin towers of the World Trade Center in New York City are shown in the aftermath of an explosion earlier that day. Twenty years ago a group of terrorists blew up explosives in an underground parking garage under one of the towers at the World Trade Center, killing six people and ushering in an era of terrorism on American soil.  (AP Photo/Ron Frehm, File)

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