The 9/11 Commission Report stated that 8 to 10 of the hijackers on 9/11 previously passed through Iran and their travel was facilitated by Iranian border guards. The report also found "circumstantial evidence that senior Hezbollah operatives were closely tracking the travel of some of these future muscle hijackers into Iran in November 2000." After the commission called for "further investigation" into a possible Iranian role in the attacks, President George W. Bush demanded that Iran sever its ties with al-Qaeda, while saying that in his view, "There was no direct connection between Iran and the attacks of September 11."