The mysterious Alaskan "State Senator A" -- a.k.a. Sen. Don Olson (D) -- has been cooperating with federal prosecutors for "about a year" on their investigation of the massive public corruption scandal involving half a dozen state senators -- including former State Sen. Ben Stevens-- bribery by local oil and gas company VECO.

According to the Anchorage Daily News, Olson testified to a federal grand jury last month and has been "interviewed maybe a half dozen times about the events" covered in the recent indictment of State Sen. John Cowdery (R). Cowdery is charged with two counts of bribery and conspiracy.

Though Olson was cited in the Cowdery indictment as being the target of a bribe, it is unlikely that he's about to be charged with anything:

Olson has no assurance that he won't be prosecuted, but [Olson's attorney Paul] Stockler said it appears highly unlikely that he will be.

"I don't believe Donny Olson did anything wrong," Stockler said. Olson never received the $25,000.