Threat closes US embassies in Muslim world August 2, 2013 - 10:01AM A secruity guard at a US embassy. Photo: Canberra Times Washington: The United States is shuttering its embassies and consulates throughout the Muslim world on Sunday after receiving an unspecified threat, officials say. State Department officials said on Thursday that they were taking action out of an "abundance of caution." Spokeswoman Marie Harf cited information indicating a threat to US facilities overseas and said some diplomatic offices may stay closed for more than a day. Other US officials said the threat was in the Muslim world, where Sunday is a workday. American diplomatic missions in Europe, Latin America and many other places are closed on Sunday. Those officials spoke on condition of anonymity because they weren't authorised to speak publicly about the matter. The State Department issued a major warning last year informing American diplomatic facilities across the Muslim world about potential violence connected to the anniversary of the September 11 terrorist attacks. Dozens of American installations were besieged by protest over an anti-Islam video made by an American resident. In Benghazi, Libya, the US ambassador and three other Americans were killed when militants assaulted a diplomatic post. The administration no longer says that attack was related to the demonstrations.