A man has been arrested in connection with the murders of two teenagers in County Armagh five years ago.
No-one has been convicted of the murders
Andrew Robb, 19, and 18-year-old David McIlwaine, both of whom were from Portadown, were stabbed to death on 18 February 2000.
Their bodies were found on the Druminure Road outside Tandragee, a few hours after they had left a disco.
Police said a 54-year-old man was arrested in Craigavon on Saturday and is being held under the Terrorism Act.
No-one has been convicted of the murders which were carried out during a loyalist paramilitary feud in the Portadown area.
However, police and both families said neither of the young men had any connection with a paramilitary organisation.
Petrol bomb attack
David McIlwaine had been a graphic design student.
In the past, a number of people were arrested and one man charged in connection with the murders, but the charges were later withdrawn in court.
In September, Andrew Robb's mother Ann blamed loyalist paramilitaries for a petrol bomb attack on her home in Portadown.
She said her family had been subjected to UVF harassment since Andrew was killed.