Speculation is rife about the precise manner of Muammar Gaddafi's death.<br /><br />Libyan leaders say he was killed in a crossfire after fighters found him hiding in a tunnel. <br />But footage shows him alive after his capture, only to be pronounced dead a short time later.<br /><br />Al Jazeera's Tony Birtley reports from the scene of his death just outside of Sirte.
