People gather at the site of destroyed World Trade Center for the seventh anniversary of the 9/11 attacks in Manhattan, New York, the United States, Sept. 11, 2008. New Yorkers on Thursday morning gathered to commemorate the 9/11 attacks that killed more than 2,700 people seven years ago.

New York Mayor Michael R. Bloomberg speaks during a commemoration rally at the site of destroyed World Trade Center in Manhattan, New York, the United States, Sept. 11, 2008. New Yorkers on Thursday morning gathered to commemorate the 9/11 attacks that killed more than 2,700 people seven years ago.

Richard Sadowy, holding a picture of his son-in-law, police officer Paul Talty who was killed in the 9/11 attacks, attends a commemoration rally at the site of destroyed World Trade Center in Manhattan, New York, the United States, Sept. 11, 2008. New Yorkers on Thursday morning gathered to commemorate the 9/11 attacks that killed more than 2,700 people seven years ago.

The picture of 9/11 attacks victim, New York fire fighter Philip Petti is seen during a commemoration rally at the site of destroyed World Trade Center in Manhattan, New York, the United States, Sept. 11, 2008. New Yorkers on Thursday morning gathered to commemorate the 9/11 attacks that killed more than 2,700 people seven years ago.

NEW YORK, Sept. 11 (Xinhua) -- New Yorkers gathered on Thursday morning in a somber ceremony near Ground Zero, site of the destroyed World Trade Center's twin towers in the September 11 terrorist strikes, to remember the more than 2,700 people who were killed in the attacks seven years ago.