There’s finally forward movement in the investigation into the September attacks on the U.S. diplomatic compound in Benghazi. One man suspected of being involved in the deadly attacks is being detained in Libya, according to CNN. Faraj al-Shibli was detained sometime in the past two days and has been interviewed by the FBI in the presence of U.S. authorities. It’s still unclear what al-Shibli’s role in the attack was or even if he was present at the time. It’s also still unclear how many people may have been involved in the planning and execution of the incident.