BENGHAZI, Libya - Armed gunmen and security forces clashed at the US consulate office in the eastern Libyan city of Benghazi on Tuesday, a security official said.

"There are fierce clashes between the Libyan army and an armed militia outside the US consulate," Abdel-Monen Al-Hurr, spokesman for Libya's Supreme Security Committee, said, adding that roads had been closed off and security forces were surrounding the building.

A US embassy source said there had been "an attack" on the diplomatic office in Benghazi, but gave no further details.

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