Man arrested over 2007 Paul Quinn murder in Castleblayney
A man has been arrested over the murder of Paul Quinn in County Monaghan in 2007.
Mr Quinn, who was 21, was beaten to death by a gang after being lured to farm buildings near Castleblayney.
The man who was arrested is understood to be in his early 20s. He was detained by Irish police in Dromad, County Louth on Sunday morning.
He is being held at Carrickmacross Garda Station under section 30 of the Offences Against The State Act.
Mr Quinn was from Cullyhanna in south Armagh.
His family blamed the IRA for his murder.