Britain and the US will hold memorial services on Friday to remember the 270 people killed when a US airliner exploded over the Scottish town of Lockerbie 30 years ago, in Britain's worst ever attack.
Pan Am Flight 103 blew up on December 21, 1988 on its way from London to New York. All 259 people on board -- most of them Americans heading home for the holidays -- were killed as well as 11 people on the ground.
Wreaths were laid in the town's memorial garden and a message from Queen Elizabeth II was read out.
"I send my prayers and good wishes to all those who will be marking this solemn anniversary," the message said.
Of the victims, 35 were from Syracuse University in New York State, where a memorial will be held later Friday.
Other US services will be held at Arlington National Cemetery and FBI headquarters.
The plane exploded after a bomb stored in a suitcase in the hold was detonated.
Only one person has ever been convicted over the bombing -- Libyan Abdelbaset Ali Mohmet al-Megrahi, who died in 2012 still protesting his innocence.
His lawyer Aamer Anwar issued a statement on Thursday claiming there had been a miscarriage of justice, saying the "finger of blame has long been pointed in the direction of Iran" for ordering the attack.
Local MP David Mundell said victims had still not received full justice.
"It has not been easy, nor have we been able to achieve the closure we would have wanted, even after 30 years," he said.
"However, throughout, the people in Lockerbie have retained their dignity and stoicism, and offered friendship and support to those who lost loved ones."
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