Is it sensitive Steve, might it involve opening a bit of can of worms, or some snakes crawling out of there, yes.

That's how the latest "60 Minutes" segment ended on Sunday.

The comment was in reference to the final chapter of a Congressional investigative report into 9/11 that has been left out of the report due to it being classified. The congressional investigative report is a report that was completed and handed over to the 9/11 commission, who ultimately produced the final "official" report.

The 28 pages that were classified have only been seen by a select few, and allegedly have to do with details around the existence of a possible Saudi support system for the hijackers while they were in the US among other implications of official Saudi involvement.

The push to declassify the documents is being led by then Chairman of the Senate Select Committe on Intelligence, former Senator Bob Grahm (D-FL), who has been a strong advocate of the documents being declassified since the Bush administration classified them due to matters of national security back in 2003.

Point blank, the Democratic senator said the hijackers were "substantially" supported by Saudi government, as well as charities and wealthy people in that country.

"I think it is implausible to believe that 19 people, most of whom didn't speak English, most of whom never been in the United States before, many of whom didn't have a high school education, could've carried out such a complicated task without some support from within the United States," Graham said.

For now only a handful of people know for sure: those who have seen the contents of the 28 classified pages. And here are some notable quotes by those that have actually read these 28 pages:

I think it is implausible to believe that nineteen people, most of whom didn't speak English, most of whom had never been in the United States before, many of whom didn't have a high school education, could have carried out such a complicatd task without some support from within the United States.

Interviewer: You believe that support came from Saudi Arabia

Grahm: Substantially

Interviewer: When you say the Saudis you mean the government, rich people in the country, charities

Grahm: All of the above

You can't provide the money for terrorists and then say I don't have anything to do with what they were doing.

In general, the 9/11 commission did not get every single detail of the conspiracy. We didn't have the time, we didn't have the resources. And we certainly didn't pursue the entire line of inquiry in regards to Saudi Arabia.

The papers are currently locked in a guarded vault beneath the Capitol called a Sensitive Compartmented Information Facility (SCIF). Very few people have access to these sites, and visitors are now allowed to bring in cameras or recording devices.

Full 60 Minutes segment here: