CIA chief John Brennan said he expects 28 classified pages of a U.S. congressional report into the September 11, 2001 attacks on the United States to be published, absolving Saudi Arabia of any responsibility.

'I think the 28 pages will be published and I support their publication and everyone will see the evidence that the Saudi government had nothing to do with it,' Brennan said in an interview with Saudi-owned Arabiya TV. His comments were dubbed into Arabic.

The withheld section of the 2002 report is central to a dispute over whether Americans should be able to sue the Saudi government, a key U.S. ally, for damages.

John Brennan backs release of classified pages, says ‘everyone will see evidence that Saudi government had nothing to do with it’

Former Senator Bob Graham, pictured, who co-wrote a report on the 9/11 attacks has called on President Barack Obama to publish the final 28 pages of the 828-page dossier relating to the financing of the atrocity

The classified 28 pages are believed to outline how the 9/11 terrorists were financed by Saudi Arabia

The 28 pages of the report were redacted, pictured, by George W Bush when the report was published in 2002

The U.S. Senate passed a bill on May 17 allowing the families of September 11 victims to do so, setting up a potential showdown with the White House, which has threatened a veto.

Saudi Arabia denies providing any support for the 19 hijackers - most of whom were Saudi citizens - who killed nearly 3,000 people in the Sept. 11 attacks. Riyadh strongly objects to the bill.

It has said it might sell up to $750 billion in U.S. securities and other American assets if it became law.

Brennan called the 28-page section merely a 'preliminary review.'

'It was found later, according to the results of the report, that there was no link between the Saudi government as a state or as an institution or even senior Saudi officials to the September 11 attacks,' he added.

Mohamed Atta, left, led the 9/11 attacks which were blamed on al-Qaeda leader Osama Bin Laden, right

Republican and Democratic senators have launched a bid to force President Obama to publish the report

The Office of the U.S. Director of National Intelligence is reviewing the material to see whether it can be declassified.

Former U.S. Senator Bob Graham, who co-chaired the congressional inquiry into the attacks, said in April that the White House will likely make a decision sometime in June on whether it would release the classified pages.

Senator Graham told ABC News: 'The 28 pages primarily relate to who financed 9/11 and they point a very strong finger at Saudi Arabia as being the principal financier.

'The position of the United States government has been to protect Saudi Arabia.

'At virtually every step of the judicial process, when the United States government was called upon to take a position, it has been a position adverse to the interests of United States citizens seeking justice and protective of the government which, in my judgement, was the most responsible for that network of support.'

The former Democratic senator has joined with Republican Walter Jones and Democrat Stephen Lynch as part of his campaign along with families of the victims.

Senators Jones and Lynch have introduced legislation to force President Obama to publish the 28 pages.