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Bin Laden killed, Obama to announce

NBC's David Gregory reports that President Obama will announce tonight that Osama bin Laden has been killed.

*** UPDATE *** This is the result of a U.S. action in Pakistan, killed by U.S. personnel, and that the United States has bin Laden's body. NBC's Savannah Guthrie reports, it was not a drone strike that killed bin Laden, it was "recent" Special Ops operation in Pakistan. 

*** UPDATE 2 *** This is, by the way, the eighth anniversary of President Bush's 2003 speech on an aircraft carrier with the banner, "Mission Accomplished" behind him.

*** UPDATE 3 *** NBC's Shawna Thomas reports: CIA Director Leon Panetta called ranking Member of the Intel Committee Dutch Ruppersberger (D-MD). Chairman of the House Intel Commitee, Rep. Mike Rogers (R-CA) is on a red-eye flight back to DC.

*** UPDATE 4 *** NBC's Mike Viqueira reports that the president called House Speaker Boehner personally to inform him. NBC's Kelly O'Donnell reports that Boehner says he will hold all comment until after the president speaks.

*** UPDATE 5 *** NBC's Athena Jones reports that a crowd has begun to gather in front of the White House. There are about 50 people out there and it seems to be growing. They're shouting and rejoicing and just finished singing the Star Spangled Banner. They erupted in applause afterwards. They're now chanting U-S-A. They had begun to sing, "We Are the Champions" and more people were running up. There is at least one police car parked next to the group.

*** UPDATE 6 *** WNBC's Jonathan Dienst reports that the New York Police Department will be ramping up security measures across the city as a precaution given the news Bin Laden has been killed, according to Paul Browne, an NYPD spokesman.