Sinn Fein's Bairbre de Brun in the office after search
Sinn Fein's offices at the Northern Ireland Assembly have been raided as part of a major police investigation into intelligence gathering by republicans.
It is believed a large quantity of documents was seized and three people detained in the searches which took place in north and west Belfast.
Among those detained was a former junior employee of the Northern Ireland Office and Sinn Fein's head of administration, Denis Donaldson.
Sinn Fein President Gerry Adams said he had complained to the British Government about the searches.
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