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14th April 2016
01:27pm BST

(Photo by Robert Giroux/Getty Images)[/caption]
Graham and other campaigners believe the flies expose Saudi Arabia's connection to the terrorist attacks on the World Trade Centre, the Pentagon and in Pennsylvania on September 11, 2001.
Graham said in an interview with 60 Minutes:
"The Saudis know what they did. We know what they did. There are a lot of rocks out there that have been purposefully tamped down, that if were they turned over, would give us a more expansive view of the Saudi role."
Graham believes the documents will prove the perpetrators of the attacks were "substantially" helped by Saudi Arabian government, financiers and charities.
When asked for comment, White House press secretary Josh Earnest said he did not know whether President Obama had looked at the sealed documents himself.
He confirmed the files were being reviewed, but mentioned that the 9/11 Commission's report found no evidence of al-Qaeda being funded by Saudi officials.Explore more on these topics: