Paul Ceglia, the man who claimed half of Mark Zuckerberg's stake in Facebook, has cleared a lie-detector test, which was conducted to determine the authenticity of the 2003 contract with Zuckerberg, his lawyers said in a court filing Friday.

According to the filing in federal court in Buffalo, New York, the polygraph focused on the authenticity of the contract with Zuckerberk, and showed no deception.

The test results are part of Ceglia's opposition to Facebook's request that he immediately turn over the alleged original contract and emails for inspection, without being asked to return, Reuters reported.

Ceglia's lawyers said the results of the lie-detector test prove the authenticity of the agreement and emails. They asked the court to allow both sides to inspect the evidence, instead of granting Facebook's request that only it should be allowed to do so.

A wood pellet salesman from Wellsville, New York, Ceglia is trying to show that in 2003 he contracted 50 percent of Zuckerberg's interest in what became Facebook.

Facebook has claimd that Ceglia is a cheat and that the contract is an amateurish forgery and the emails fabricated.

Facebook admits that in 2003 when Zuckerberg was a freshman at Harvard, he did some programming work for Ceglia to earn money. However, the company denies Celiga's stake in Facebook.