With just three days to go before her last day at the State Department, Secretary of State Hillary Clinton continues to be dogged by questions about the deadly terror attack on the U.S. Consulate in Benghazi last fall.

In a letter sent late on Monday, three Republican House committee chairmen asked Clinton to provide documentation relating to security at the consulate, video footage of the September 11 attack, and other material, saying the recent Accountability Review Board (ARB) probe into the incident had left key questions unanswered.