The Arabic television station Al Jazeera has been broadcasting footage it claims features the hijackers of last year's September 11th attacks on the United States. The Qatar-based channel aired the footage last night, but did not say how or where it obtained the tape. It was reportedly recorded in the southern Afghan city of Kandahar before the assaults. One of the alleged hijackers named as Abdul Aziz al-Omari is seen praising Ossama bin Laden, the leader of the Al Qaeda terrorist network identified by the US as orchestrating the assaults.The tape also includes the voice of a man Al Jazeera says is Bin Laden, naming and praising the hijackers.