NEW YORK (AP) -- The ceremony marking the 10th anniversary of the Sept. 11 attacks in lower Manhattan has paused for the first of six moments of silence.
The moments mark the times that each plane hit the towers; when each tower fell; and the attacks on the Pentagon and Flight 93. Houses of worship throughout the city were asked to toll their bells for the first moment of silence at 8:46 a.m., which marks when the first plane hit the North Tower.
The city is observing the anniversary Sunday at the National September 11 Memorial at the World Trade Center site. The ceremony is also serving as the memorial's official opening. The site opens to the public Monday.
The centerpiece of the ceremony is the reading of the names of those who died in the attacks.