Abdel Basset Ali al-Megrahi, the only person who was convicted in the 1988 bombing of an American jetliner over Lockerbie, Scotland, died of prostate cancer on Sunday, 60, leaving many questions on the attack and its aftermath unanswered.
Megrahi, who claims he has no responsibilities for in the midair explosion of Pan Am Flight 103, which killed 270 people, including 189 Americans and 11 on the ground were killed. However, he was found guilty in 2001 but was released in 2009 and returned to Libya because he had terminal cancer and was not expected to live long.
"I am an innocent man," al-Megrahi insisted, most recently in his final interview in December, in the final stages of prostate cancer. "I am about to die and I ask now to be left in peace with my family."
But his death at age 60 leaves no peace for families who still question his guilt and whether others in one of history's deadliest terror attacks went unpunished.
The Scottish government said Sunday that it will keep on investigating the bombing despite al-Megrahi's death. Scotland's First Minister, Alex Salmond, said prosecutors have always believed that al-Megrahi did not act alone in the bomb plot.