In this undated file photo made available Sept. 25, 2011, Hannibal Gadhafi, son of ousted Libyan leader Moammar Gadhafi, watches an elite military unit exercise in Zlitan, Libya. A Lebanese security official says members of a Libyan fact-finding mission who came to Beirut to request Gadhafi's extradition for crimes committed during his father's rule, left on Tuesday, Dec. 29, 2015, amid security concerns. Gadhafi remains in Lebanese custody after unknown captors delivered him to authorities in December. (AP Photo/Abdel Magid al-Fergany, File)