Two men who were arrested by detectives investigating the murder of a teenager in County Londonderry 20 years ago have been released.
Jonathan Cairns was 18 when he was attacked in Ballykelly on his way home from a night out on 25 April 1999.
His body was found the next day in a shallow grave in Loughermore Forest, about five miles (8km) from his home.
The two men, aged 51 and 43, were arrested by police on Thursday morning in Limavady and Ballykelly.
They were released on bail on Thursday evening.
On Wednesday, a 44-year-old woman arrested on suspicion of murder was released on police bail pending further enquiries.
The investigation into Mr Cairns' murder has involved more than 2,500 witnesses, statements from almost 900 people and 20 searches.
A man was jailed for helping to dispose of his body but no-one has ever been convicted of his murder.
In April the teenager's parents made a new appeal for information on the 20th anniversary of his death.