State Department officials are seeking details of a raid on the abandoned American Embassy in Tripoli, Libya.
Reuters reported late Sunday that members of a Libyan militia had taken over an embassy annex but had not broken into the main compound.
The State Department official said fighting between militias close to the compound was the primary reason personnel and operations were temporarily relocated to Malta in July.
U.S. personnel were evacuated with a military escort in July as chaos has descended on the Libyan capital.
A Pentagon spokesman said at the time that military planes and spy vehicles assisted in the operation to protect American officials from a possible attack.
“All embassy personnel were relocated, including the Marine security guards who were providing security at the embassy and during the movement. The embassy staff was driven in vehicles to Tunisia,” Rear Adm. John Kirby said in a statement.
“The mission was conducted without incident, and the entire operation lasted approximately five hours,” Kirby said.