Abdelbaset al-Megrahi, the Lockerbie bomber, was seen at a rally for Muammar Gaddafi. If you remember, he was sent home on compassionate grounds by Scotland. He was allegedly within a few months of death. Two years later, he is alive and well enough. He served 8 out of 27 years for murdering 270 people. He was convicted of plotting the bombing of flight 103 over Lockerbie, Scotland, four days before Christmas in 1988. 259 on the plane and 11 on the ground died.
Libya took credit for what they said was revenge for Reagan ordering the bombing of Tripoli following a Libyan bombing of a Berlin nightclub in which U.S. personnel were killed. Read here: Lockerbie bomber alive and well at a rally
Recreation of the bombing