FILE - Soldiers search the crater left after the crash of Pan Am flight 103 near the town of Lockerbie, Scotland after a bomb aboard exploded, killing a total of 270 people, in this December 21, 1988 file photo. The son of a former Libyan intelligence officer convicted of the bombing says his father has died in Tripoli. Abdel Baset al-Megrahi was released in 2009 from his Scottish prison on humanitarian grounds, suffering from prostate cancer. His death was announced on Sunday May 20 2012 by his son, Khaled. (AP Photo/Martin Cleaver, File)