The truth behind the Lockerbie bombing may never be known, according to a former British ambassador to Libya.
Former British ambassador Oliver Miles said he believes nobody could be brought to justice for the incident - but said he suspected former Libyan dictator Muammar Gaddafi was behind the bombing.
Mr Miles told the BBC:
It was such a shocking and enormous atrocity that clearly nobody was going to rest until the truth was found.
I don't think the truth possibly ever will be found so perhaps we will be talking about this for years to come.
I don't think anybody thinks he was the man behind the bombing, I think the question is whether he was one of the operatives who actually did what had to be done if it was a Libyan bombing - he's supposed to be responsible for getting the bomb on to the plane.
But I don't think anyone thinks he was the mastermind, so to speak - if there was a Libyan mastermind, it was Gaddafi.
While Gaddafi was still in power I never felt there was any real prospect of co-operation from the Libyan side. That's changed. We now have a Libyan regime that has no interest in concealing Gaddafi's crimes - rather the contrary.
More top news
Five Britons have died after the car they were in plunged more than 80 feet from a bridge into a Swedish canal.
The Church of England has defended sending "prayers" on Twitter to The God Delusion author Richard Dawkins following his recent stroke.
Barack Obama and his wife Michelle have exchanged Valentine's Day messages on the The Ellen DeGeneres Show.