John Stamos John Stamos

John Stamos' attorney denies the actor had a fling with a then-17-year-old girl in 2004 who is now accused of trying to extort the star by threatening to sell compromising photos of him.

Defense lawyer Sarah Henderson made the allegation during opening arguments Monday in the trial of Allison Coss, 24, and Scott Sippola, 31, both of Marquette, Mich., who are charged with conspiracy to commit extortion, according to The Associated Press. Coss and Sippola are accused of attempting to extort the actor for $680,000, claiming they had photos of him with strippers and cocaine. Prosecutors say the photos don't exist, and FBI agents testified Monday they found no such photos during a search of the defendants' house after their arrest, the AP reports.

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Henderson and Assistant U.S. Attorney Maarten Vermaat agreed that Coss and Stamos met in Orlando, Fla., in 2004, shortly after Stamos separated from wife Rebecca Romijn. Henderson said that Stamos invited Coss and another girl, both of whom he had met at a club, to his hotel room, where he ordered Coss a drink even after she told him she was 17. Two strippers later arrived with cocaine, and Coss and her friend took a photo of Stamos bending over a table with cocaine on it, Henderson said.

John Stamos target of extortion attempt, rep says

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