Americans Sunday remembered the horror of September 11, 2001, and the almost 3,000 people who died in the hijacked plane attacks as authorities worked to ensure the arousing 10th anniversary was peaceful.
Law enforcement authorities in New York and Washington were on high alert beside what was described as a “credible but unconfirmed” threat of an al Qaeda plot to attack the United States once more a decade after the toppling of the World Trade Center’s twin towers by hijacked airliners.
Security was principally tight in Manhattan, where police set up vehicle checks on city streets as well as bridges and tunnels coming into the city.
President Barack Obama and ex- President George W. Bush, who was president at the time of the attacks, were planned to be among the dignitaries at the Ground Zero site in New York.