BENGHAZI, Libya - A team of US investigators traveled to the eastern Libyan city of Benghazi on Thursday to visit the compound where the US ambassador was killed in an attack last month, Libyan security sources said.

FBI agents were dispatched to Libya after the Sept. 11 assault on the US diplomatic mission and on another facility in which Ambassador Christopher Stevens and three other Americans were killed.

But, until now, the agents have remained in Tripoli.

"An American team has been visiting the compound," one Libyan security source said. Another security source said: "They have been assessing the damage, collecting evidence."

They did not give further details and the FBI in Washington had no immediate comment.

The road leading to the compound's front gate was blocked off by vehicles mounted with weapons belonging to the Libyan security forces, a Reuters witness said.

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