President Barack Obama condemned what he called the attack beyond the Amerikat States Consulate in Benghazi, Libya.
In the attack on Tuesday (11/09) night, the U.S. Ambassador, John Christopher Stevens, was killed along with three other Americans.
"I strongly condemn the attack that exceeds the upper limit of our diplomatic facilities in Benghazi," said President Obama in a statement.
The four Americans, according to Obama, emphasizing the U.S. commitment to freedom, justice, and partnerships with the nations and citizens of the world.
The U.S. Defense Department has confirmed it will work with the State Department to improve security at its diplomatic facilities around the world.
"We are following this tragic incident closely with the State Department. We are ready to support the Department of State by all means, "said Defense Department spokesman, Lt. Col. Steven Warren.
Meanwhile, Secretary of State, Hillary Clinton, said the death toll has committed to help the Libyan people achieve a better future.
Libyan authorities said the attack was carried out late Tuesday protesters angered by the release of the film deemed insulting to the Prophet Muhammad.
The attackers carrying guns and rocket-propelled grenades set fire to the U.S. Consulate building in Benghazi, which is Libya's second largest city after the capital Tripoli.
Chairman of the Libyan National Council, Mohammed Magarief, has confirmed the attackers will be brought to justice.
"We reiterate that no one can be free from punishment and the investigation," he told a news conference, Wednesday, September 12, which was broadcast live television channel Al Jazeera.
He also apologized for the United States in connection with the attack on the U.S. Consulate.
Magarief promised that all foreign nationals in Libya will get protection from the government and security forces in Libya.
Libya's Deputy Interior Minister, Wanis al-Sharif, had alleged that the attackers were supporters of the late former Libyan leader, Muammar Gaddafi, who was overthrown by the revolution and was killed when insurgents discovered.
Obama Condemn Violent Attacks in Benghazi