Sheer incompetence.

(CNN) — More than two weeks after four Americans — including the U.S. ambassador to Libya — were killed in an attack on the U.S. Consulate in Benghazi, FBI agents have not yet been granted access to investigate in the eastern Libyan city, and the crime scene has not been secured, sources said.

“They’ve gotten as far as Tripoli now, but they’ve never gotten to Benghazi,” CNN National Security Analyst Fran Townsend said Wednesday, citing senior law enforcement officials.

Last Thursday, U.S. Secretary of State Hillary Clinton told reporters that an FBI team had reached Libya earlier in the week.

“In fairness to the secretary, it may be that she wanted to be coy about where they were in Libya for security concerns. That’s understandable. But the fact is, it’s not clear they’ve been in Libya for very long,” Townsend said on CNN’s “Anderson Cooper 360°.”

“They had difficulty, and we understand there was some bureaucratic infighting between the FBI and Justice Department on the one hand, and the State Department on the other, and so it took them longer than they would have liked to get into country. They’ve now gotten there. But they still are unable to get permission to go to Benghazi.”

FBI agents have made a request through the U.S. State Department for the crime scene to be secured, Townsend said, but that has not happened.