Documents released by the FBI show a source told investigators an Alaska congressman and his late wife spent campaign money on hunting trips and flights and wrote checks to themselves over years of allegedly profligate spending on his contributors’ dime.

The allegations were not enough to convince the FBI that they could convict Rep. Don Young and the matter was dropped in 2010.

The documents were released Friday, more than three months after a federal judge rejected the Justice Department’s refusal to turn over records of its criminal investigation.