Al-Qaeda accuses Iran of 9/11 lie
Al-Qaeda's deputy leader, Ayman al-Zawahiri, has blamed Iran for spreading the theory that Israel was behind the 11 September 2001 attacks.
In an audio tape posted on the internet, Zawahiri insisted al-Qaeda had carried out the attacks on the US.
He accused Iran, and its Hezbollah allies, of trying to discredit Osama Bin Laden's network.
Correspondents say the comments underline al-Qaeda's increasing public hostility towards Iran.
In a two-hour audiotape posted on an Islamist website, Osama Bin Laden's chief deputy responded to questions posted by al-Qaeda sympathisers.
In response to a question about persistent rumours in the Middle East that Israel was involved in the 9/11 attacks, Zawahiri said the rumour had begun on the Hezbollah television station, Al-Manar.
"The purpose of this lie is clear - [to suggest] that there are no heroes among the Sunnis who can hurt America as no-one else did in history," he said.
"Iranian media snapped up this lie and repeated it."
1) Al-Qaeda accuses Iran of 9/11 lie