The Guardian: Ali Treki is a career Libyan politician and diplomat. He made it to the post of president of the UN general assembly despite some previous dodgy comments about Jews. His tenure at the UN ended in September 2010 and his most recent Libyan government post was foreign minister.
No word on what Treki was/is doing in Tunisia, or whether Gaddafi sent this key member of his foreign policy apparatus. But Treki was certainly very keen to avoid the media spotlight.
Now he spots the camera and gets nervous