Saadi Gaddafi, son of Muammar Gaddafi, sits behind bars during a hearing at a courtroom in Tripoli, Libya November 1, 2015. Saadi Gaddafi, 42, was extradited to Libya by Niger last year. He has been held since then in a Tripoli prison facing charges over the killing of a soccer player when he headed the Libyan Football Federation, as well as other crimes. REUTERS/Ismail Zitouny