Omari arrived in the United States in June 2001 , on a tourist visa , obtained through the Visa Express program . On September 11 , 2001 , Omari boarded American Airlines Flight 11 and assisted in the hijacking of the plane , which was crashed into the North Tower of the World Trade Center , as part of the coordinated attacks
American Airlines Flight 11
American Airlines Flight 11
Abdulaziz al-Omari