2013-01-17T213507Z_2_CBRE90G196H00_RTROPTP_2_USA-SECURITY

It’s been four months to get to this photo op. Non-response has gotten us Algeria.

FBI Director Robert Mueller visited Libya on Thursday, an FBI official said, as U.S. investigators continued their inquiry into the September attack in Benghaziin which U.S. Ambassador to Libya Christopher Stevens and three other Americans were killed.

“The director’s visit was an opportunity to discuss ongoing cooperation on a number of issues,” said the FBI official, who spoke on condition of anonymity.

Mueller met with several senior Libyan officials, including Prime Minister Ali Zeidan, the justice minister and the intelligence chief, a Libyan government source said, adding that the meetings were secret.

FBI agents went to Benghazi in October to analyze the crime scene but have since remained in Tripoli because of security concerns. In an effort to generate leads, the FBI has put out a poster asking for information.

U.S. officials have not announced the capture of any suspects in the attack, although President Barack Obama said in December that investigators have some “very good leads.”