Police read a statement from Miss McGrath's parents, Christine and Joe, and the rest of the family. "We would like to express our thanks to Detective Superintendent Jeff Hill and all of the current members of his cold case team for their hard work, dedication and professionalism."
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Cloud thickening tonight with rain spreading eastwards later.
A mixture of sunny spells and isolated showers this afternoon.
Police think that one of the men involved in last week's abduction attempt at RAF Marham was given a black eye.