Intelligence experts were trying to establish the identity of an American terror suspect arrested in Pakistan today as doubts emerged that he was al Qaida’s US-born spokesman.

Al-Qaida’s American spokesman Adam Gadahn called on the terror network’s fighters to greet US President George Bush with "bombs and booby-trapped vehicles" when he visits the Middle East later this week, according to a new video posted today.

Police have arrested two leaders of the insurgency in Iraq, including a top aide to Iraqi al-Qaida leader Abu Musab al-Zarqawi, it was announced today.

An audiotape said to be from Osama bin Laden’s al-Qaida deputy warned that the terror group would target Americans “in their homeland” and drive the military from US bases.