PHOTOS: Attack Kills US Ambassador to Libya

A car vehicle burns after it was set on fire inside the US consulate compound in Benghazi late on September 11, 2012. An armed mob protesting over a film they said offended Islam, attacked the US consulate in Benghazi and set fire to the building, killing one American, witnesses and officials said. (STR/AFP/GettyImages)

An armed man waves his rifle as buildings and cars are engulfed in flames after being set on fire (STR/AFP/GettyImages)

A US State Dept employee walks by one of several plaques honoring its foreign service personell who have died while serving, hanging in the lobby of the US State Department (PAUL J. RICHARDS/AFP/GettyImages)

The wreckage of a car sits inside the US Embassy compound on September 12, 2012 in Benghazi, Libya, following an overnight attack on the building. (STRINGER/AFP/GettyImages)

A burnt out vehicle sits smoldering in flames after it was set on fire inside the US consulate compound in Benghazi (STR/AFP/GettyImages)

US Secretary of State Hillary Clinton delivers a statement September 12, 2012 on the killing of US Ambassador to Libya Christopher Stevens and 3 staff members at the US Consulate building in Benghazi, Libya, from the Treaty Room of the US Department of State, in Washington, DC. (PAUL J. RICHARDS/AFP/GettyImages)

A vehicle and the surrounding area are engulfed in flames after it was set on fire inside the US consulate compound in Benghazi late on September 11, 2012. An armed mob protesting over a film they said offended Islam, attacked the US consulate in Benghazi and set fire to the building, killing one American, witnesses and officials said. (STR/AFP/GettyImages)

A burnt building is seen inside the US Embassy compound on September 12, 2012 in Benghazi, Libya, following an overnight attack on the building. (STRINGER/AFP/GettyImages)

U.S. Ambassador J. Christopher Stevens, the U.S. ambassador to Libya since May, died as he and a group of embassy employees went to the consulate in Eastern Libya to try to evacuate staff. (AP)

Libyan civilians help an unconscious man, identified by eyewitnesses as US ambassador to Libya Chris Stevens, at the US consulate compound in Benghazi, following an overnight attack on the building. Stevens and three of his colleagues were killed in an attack on the US consulate in the eastern Libyan city by Islamists outraged over an amateur American-made Internet video mocking Islam, less than six months after being appointed to his post. (-/AFP/GettyImages)

Libyan civilians help an unconscious man, identified by eyewitnesses as US ambassador to Libya Chris Stevens, at the US consulate compound in Benghazi, following an overnight attack on the building. Stevens and three of his colleagues were killed in an attack on the US consulate in the eastern Libyan city by Islamists outraged over an amateur American-made Internet video mocking Islam, less than six months after being appointed to his post. (-/AFP/GettyImages)

Mohamed al-Megaryef, president of Libya's highest political authority the General National Congress, gives a press conference on September 12, 2012 in Tripoli, Libya, following an overnight attack on the US consualate in Benghazi. Libya apologised to the United States a day after US Ambassador Chris Stevens and three other Americans were killed when an armed mob stormed the American consulate in Benghazi. (GIANLUIGI GUERCIA/AFP/GettyImages)

President Barack Obama (R) makes a statement about the death of U.S. ambassador to Libya J. Christopher Stevens with Secretary of State Hillary Clinton in the Rose Garden at the White House September 12, 2012 (Photo by Chip Somodevilla/Getty Images)

President Obama today condemned the "outrageous and shocking" attack in Libya that killed the U.S. ambassador and three other Americans, and said he has ordered beefed up security at other embassies. (Photo by Alex Wong/Getty Images)

Republican presidential candidate Mitt Romney says it's never too early for America to condemn attacks on its sovereignty and says the White House gave "mixed signals" in its response to the breach of the American embassy in Egypt. (AP)