US officials were warned of 9/11 hijackings

Victoria Ward, New York

Some 52 warnings were given to the Federal Aviation Administration between April and September 10, 2001 about the terror group and its leader Osama bin Laden, according to documents released by the 9/11 commission that investigated the attacks.

Five security warnings made reference to al-Qaida’s training of hijackers and two detailed suicide operations not connected to aviation, the report says.