A former State Department diplomat has come forward with bombshell allegations that aides of then-Secretary of State Hillary Clinton took part in after-hours sessions to withhold "damaging" information during the investigation into the fatal 2012 terror attack on a U.S. outpost in Benghazi, Libya.

Former Deputy Assistant Secretary Raymond Maxwell says that close confidants of Clinton took part in an operation to scrub certain documents before they were turned over to the Accountability Review Board investigating security lapses.

Some wonder if this could be the potential smoking gun of a Benghazi cover-up. The potential bombshell was reported by Sharyl Attkisson of The Daily Signal.

Rep. Jason Chaffetz (R-UT) joined Martha MacCallum on America's Newsroom and said that Maxwell has been consistent in his story for the past year that the Accountability Review Board was not given unfettered access to all documents.

Chaffetz said after two years and multiple hearings, they are still waiting for access to all the Benghazi documents, adding that there have been no ramifications for the State Department for the tragic attack.

"Nobody was ever fired, nobody ever missed a paycheck, nobody was ever dismissed, nobody was found at fault."

Watch the clip from America's Newsroom below.