The way the question was phrased" what was the real cause" it`s possible that you are looking for some type of conspiracy answer. Perhaps I`m wrong, anyway the actual cause was a bomb.
The following is from
here. Quote:
This site is the official homepage of the Victims of Pan Am Flight 103, Inc. This group is comprised of family members and friends of those whose lives ended when a terrorist bomb exploded on Pan Am Flight 103 over Lockerbie, Scotland on December 21, 1988. We are committed to seeking the truth about this tragedy and keeping the memory of our loved ones alive.
Bomb.
The following is from here. Quote:
On December 21, 1988, Pan Am Flight 103 exploded over Lockerbie, Scotland, killing all 259 people on board as well as 11 on the ground. Though it was almost immediately evident that a bomb had caused the disaster, it took more than eleven years to bring anyone to trial. What happened to the plane? Why would someone plant a bomb on Flight 103? Why did it take eleven years to have a trial?
Bomb.
As to who did it, well Abdelbaset Ali Mohmed al Megrahi and Al Amin Khalifa Fhimah were convicted of it.
Here is a link to a conspiracy page regarding this event, for anyone interested.
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