Associated Press - June 22, 2009 5:15 PM ET

SALEM, Ore. (AP) - Oregon's attorney general, John Kroger, has finished months of investigation into the sex scandal around Portland's mayor and finds no credible evidence Adams had sex with a teenager in 2005.

Just a few days after Adams took office this year the scandal broke wide open: The mayor, who is gay, admitted he had an affair with a teenager, Beau Breedlove.

But Adams insisted there was no sex before it was legal, when Breedlove turned 18.

Kroger issued a report today and held a press conference to say there wasn't enough of a case against Adams to bring it to trial.

In particular, Kroger says, Breedlove is not a credible witness, citing acts that brought him money and notoriety.

Kroger notes that Breedlove's posed for the gay porn magazine Unzipped and was paid for it and that Breedlove's leaked details about the relationship to journalists.

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