US authorities warn of possible 'lone wolf' attack on one-year anniversary of Osama bin Laden's death

U.S. authorities said they remain concerned over a possible 'lone wolf' attack on the one-year anniversary of Osama bin Laden's death.

URL: http://www.topix.com/world/pakistan/2012/04/us-authorities-warn-of-possible-lone-wolf-attack-on-one-year-anniversary-of-osama-bin-ladens-death?fromrss=1

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