Jonathan Cairns was murdered in 1999.
Police have arrested two women in connection with the murder of a teenager in Derry 20 years ago.
Jonathan Cairns was 18 when he was attacked in Ballykelly on his way home from a night out on April 25, 1999.
His body was found the next day in a shallow grave in Loughermore Forest, about five miles from his home.
The investigation into Mr Cairns' murder has involved more than 2,500 witnesses, statements from almost 900 people and 20 searches.
Police today said that detectives investigating the murder of Jonathan have arrested two women aged 72 and 46 years old in the Derry area.
No other details of the arrests were released by the PSNI.
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