Lieberman requests documents on Benghazi attack

HARTFORD, Conn. (AP) — Connecticut Sen. Joe Lieberman is asking for intelligence documents related to the attack on the U.S. mission in Benghazi, Libya.

Lieberman, an independent, is chairman of the Senate's Homeland Security and Governmental Affairs Committee.

That committee and others are trying to determine what the nation's intelligence agencies knew and when, before, during and after the Sept. 11 attacks in which U.S. Ambassador Christopher Stevens and three others were killed.

In letters dated Thursday, Lieberman and Maine Sen. Susan Collins, the ranking Republican on the committee, ask Director of National Intelligence James Clapper, Secretary of State Hillary Rodham Clinton, and Secretary of Defense Leon Panetta for information about security at the mission.

The White House has acknowledged the attack probably was carried out by an al Qaida-linked group, with no public demonstration beforehand.