The only evidence connecting Megrahi to the Lockerbie Bombing was a tiny piece of circuit board and a Maltese man claiming a person who looked like Megrahi had bought the clothing which had been rapped around the bomb, from his shop. The CIA planted the circuit board.
The group more likely to be behind the bombing are a Palistinian group hired by the Iranian government. Just before the Lockerbie Bombing, a US naval battle cruiser called the U.S.S Vincennes shot down an Iranian airliner over the Persian Gulf, killing 290 people. The US Navy claimed it was an accident. The Lockerbie Bombing was more than likely Iran's revenge.
Megrahi recieved a heroes welcome because he stood trail for a crime he probably didn't commit for the good of his country. The US blaimed Libya for the bombings (before Megrahi's trial) and (along with the UN (persuaded by the US)) had imposed crippling economic sanctions on Libya. If Libya claimed responsibilty for the Lockerbie Bombing, these sanctions would be lifted.
