A service is just beginning at Dryfesdale Church in Lockerbie to mark the 25th anniversary of the bombing.
The service, which has the theme 'Looking Forward', is being led by students from a scholarship programme between Lockerbie Academy and Syracuse University.
Some 35 students from the university, in upstate New York, were killed in the disaster.
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The announcement came a day after a famine was declared in two areas of South Sudan following three years of civil war and severe inflation.
It is unclear what their alleged plans were.
Anti-terror police are currently questioning the men who were arrested at three separate locations in France.