Qatar's al-Jazeera television showed a video Thursday, saying al-Qaida chief Osama bin Laden had met with some of the Sept. 11 hijackers before that tragedy in 2001.

In the video, bin Laden is seen meeting with some of the Sept.11 hijackers, including his former lieutenant Mohammed Atef and Ramzi Binalshibh, another suspected planner of the Sept. 11 suicide hijackings.

Atef, also known as Abu Hafs al-Masri, was killed in a U.S. airstrike in Afghanistan in 2001, while Binalshibh was captured in Pakistan four years ago.

Bin Laden, wearing a dark robe and white head gear walking outdoors in a mountainous area, smiled as he received several of the Sept. 11 hijackers, according to the video.

Meanwhile, al-Jazeera late Thursday also aired an audio tape showing new al-Qaida head in Iraq Abu Hamza al-Muhajir, which is said to be first released by him since he succeeded the slain militant Abu Musab al-Zarqawi three months ago.

In the tape, al-Muhajir called for Muslims unity against the enemy, saying "place your hands in our hands ... our enemy has unified his ranks, now is the time to unite."

Editor: Yan