Abdel Basset Ali Al-Megrahi

Abdel Basset Ali Al-Megrahi

Mannoocher Deghati/AFP/Getty Images

Libyan Abdel Basset Ali Al-Megrahi, center, the only person convicted of the 1988 bombing of Pan Am Flight 103 over the Scottish town of Lockerbie, is escorted by security officers in Tripoli on Feb. 18, 1992.