But the only convicted bomber, al-Megrahi, was freed by the Scottish authorities on 20 August after he had served eight years of a life sentence for the 1988 bombing of Pan Am flight 103, in which 270 people died.
His subsequent hero's welcome in Tripoli generated anger in the US and UK. The British government has also been forced to deny reports that his release was linked to an oil deal.
As Libya marks its anniversary, British authorities have published all correspondence with Scottish ministers over his release.
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