Petraeus to testify behind doors on Benghazi Friday U.S. Army Gen. David Petraeus, then-CENTCOM Commander, participates in a Senate Foreign Relations Committee hearing on Capitol Hill, December 9, 2009 in Washington, DC. / AP Photo/Mark Wilson Gen. David Petraeus will testify before a House Committee on the Libya embassy attack Friday morning, despite the ongoing FBI investigation into an extramarital affair that led to his resignation as director of the CIA. The hearing held by the Senate Intelligence Committee is closed to the public and the media. Petraeus is expected to answer questions about the CIA's knowledge and handling of the assault on the U.S. Consulate in Benghazi that left U.S. Ambassador Chris Stevens and three other Americans dead. Two of those Americans were with the CIA. It was unclear at first whether or not Petraeus would testify as planned, after he abruptly resigned from the agency amid news of his affair with biographer Broadwell. Five days ago, the Senate Intelligence Committee said the retired General would skip the hearing. Sen. Dianne Feinstein, D-Calf., said Wednesday that Petraeus "willing and interested" to talk to the committee, CBS News' Stephanie Condon reported earlier Wednesday. Our hearings are on Benghazi and the intelligence that preceded Benghazi and the intelligence that determined security," she told reporters. Congressional investigators get access to telegrams, intelligence reports, and classified emails as they interview top security and Pentagon officials. Sources tell CBS News' Margaret Brennan that intelligence officials will show footage from an unmanned surveillance drone that was overhead during the assault. The Senate Foreign Relations Committee, which has oversight of the State Department, has already been briefed about the attack by Under Secretary Patrick Kennedy and Assistant Secretary for Diplomatic Security Eric Boswell.