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Did Wikileaks Leaker Access Top Secret "Intelpedia?"

United States Marines from Bravo Company of the 1st Battalion of the 2nd Marines watch the explosion after calling in an air strike during a gun battle as part of an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. AP Photo/Kevin Frayer

WikiLeaks founder Julian Assange says that yesterday's unprecedented release of thousands of secret government documents related to Afghanistan only "scratched the surface" of what he has in his possession.

His organization, he said, has "several million files" that "concern every country in the world with a population over one million."

In light of those comments, one U.S. intelligence source tells CBS News that whoever leaked the information may have accessed the secret military network called SIPR that includes a site called "Intelpedia."

"Intelpedia" is based on the same concept as Wikipedia. Every country in the world is listed there, and those with access can pull up each country and access all the secret reports to which the United States has access.

The intelligence source, who has no direct knowledge of how the documents were obtained, said based on Assange's comments there is a good chance that they came via Intelpedia.

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