The United States embassy compound in the Libyan capital of Tripoli has been raided by militiamen, but no Americans were present as the embassy was evacuated more than a month ago.
The attack on Sunday comes as fighting between rival militias rages in the capital Tripoli and Benghazi, the scond city in the east.
Even though the US suspended its mission in Tripoli for the second time in three years in July, the US Secretary of State John Kerry had said that the embassy was not closed, and its staff had been evacuated to neighbouring Tunisia.
In February 2011, the embassy suspended operations amid the uprising that eventually toppled longtime leader Muammar Gaddafi. After the formation of a transitional government in July 2011, the embassy reopened in September.
The Obama administration has been particularly sensitive about security of US government employees in Libya since the September 11, 2012, attack on the US mission in Benghazi that killed ambassador Chris Stevens and three other Americans.
Tripoli has been embroiled for weeks in inter-militia violence that has killed and wounded dozens on all sides.
Source: Al Jazeera