Gardaí have issued a fresh appeal for information on the tenth anniversary of the brutal murder of Paul Quinn at a farm in County Monaghan.
Mr Quinn was lured to a farm at Tullycorra in Castleblayney on October 20th 2007 where he was held hostage and beaten by a group of men.
He was taken to Our Lady of Lourdes Hospital in Drogheda where he died later that night.
His family believe he was killed by the IRA.
This morning, gardaí said 23 people have been arrested in connection with the investigation over the past ten years - 14 by gardaí and nine by the PSNI.
Investigators have obtained over 700 statements regarding the murder and nearly 2000 individual lines of inquiry have been pursued.
While gardaí are unable to confirm the names of anyone who may have supplied information to the investigation, they have insisted that all leads have been "investigated to a finality."
The investigation remains active and is currently under review by the Serious Crime Review Team.
A Crimecall appeal for information is also being conducted early next month.
Anyone with any information regarding the murder is urged to contact gardaí at Carrickmacross Garda station on 042 9690190.