DNA test for murder riddle

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DETECTIVES are reinvestigating a 20-year-old murder mystery using modern DNA testing techniques.

Police yesterday confirmed they were reviewing the case of Mary Gallagher, found dead with her throat cut at the age of 17, but said inquiries were at an early stage. They confirmed a man aged 39 was detained on Friday, but said he had been released without charge. A man who allegedly told relatives he killed her is said to have voluntarily given a DNA sample which is being tested at a laboratory in The Hague which can extract DNA from samples despite the lapse of many years.