An arrest has been made by gardaí investigating the murder of Paul Quinn at Tullycorra, Castleblayney on October 20, 2007.

A man in his 20s is being questioned by detectives investigating the murder of a man in County Monaghan six years ago.

Gardaí investigating the 2007 murder of Paul Quinn at Castleblayney, Co Monaghan have made an arrest.

Relatives of members of a gang who murdered young truck driver Paul Quinn were tonight urged to come forward as detectives investigate 1,200 lines of inquiry into the death.