Osama bin-Laden addresses a news conference in Afghanistan in this May 26, 1998 file photo. [Photo/Agencies]

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12:01: Bin Laden was located at a compound in Abbottabad, Pakistan, which was monitored and when the time was determined to be right.

11:53: He said operation was a 'direct executive order' Obama took credit for giving the command to kill Bin Laden. Obama called on the American people to re-live the sense of unity experienced after 9/11.

WASHINGTON – Osama bin Laden, the glowering mastermind behind the Sept. 11, 2001, terror attacks that killed thousands of Americans, was killed in an operation led by the United States, President Barack Obama said Sunday.

A small team of Americans carried out the attack and took custody of bin Laden's remains, the president said in a dramatic late-night statement at the White House.

A jubilant crowd gathered outside the White House as word spread of bin Laden's death after a global manhunt that lasted nearly a decade.

"Justice has been done," the president said.

The development comes just months before the 10th anniversary of the Sept. 11 attacks on the World Trade Centers and Pentagon, orchestrated by bin Laden's al-Qaida organization, that killed more than 3,000 people.

The attacks set off a chain of events that led the United States into wars in Afghanistan, and then Iraq, and America's entire intelligence apparatus was overhauled to counter the threat of more terror attacks at home.

Al-Qaida was also blamed for the 1998 bombings of two US embassies in Africa that killed 231 people and the 2000 attack on the USS Cole that killed 17 American sailors in Yemen, as well as countless other plots, some successful and some foiled.