From the Washington Post, May 1 just before midnight:

Osama bin Laden, the longtime al-Qaeda leader and chief architect of the Sept. 11, 2001, terrorist attacks on the United States, was killed Sunday by U.S. forces, President Obama announced late Sunday night. [...]

“Today’s achievement is a testament to the greatness of our country and the determination of the American people.” Obama said. “The cause of securing our country is not complete, but tonight we are once again reminded that America can do whatever it is we set our mind to. That is the story of our history.”