This image provided by the New York Police Department shows a graphic found on al Qaida Internet forum currently being investigated by police as a terrorist threat. Authorities are trying to identify ... more 
This image provided by the New York Police Department shows a graphic found on al Qaida Internet forum currently being investigated by police as a terrorist threat. Authorities are trying to identify the source. (AP Photo/NYPD) less 
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Associated Press | Photo By NYPD
Mon, Apr 2, 2012 8:32 PM EDT