Garda Commissioner Drew Harris met gardaí in Monaghan today where he was given an update on the latest on the investigation into the murder of Paul Quinn in 2007.
The 21-year-old from Cullyhanna in south Armagh was lured to his death and brutally murdered 14 years ago.
He was found badly beaten in a shed near Castleblayney in Co Monaghan.
Gardaí and the PSNI are working on the investigation which straddles both sides of the border.
It is believed Paul Quinn was ambushed, beaten and killed on 20 October 2007 because he was involved in a row with the son of a senior member of the IRA.
At least nine men took part in the attack. Another 10 are suspected of acting as look-outs on the day of the murder.
A month after his murder the Independent Monitoring Commission said it believed people associated with the IRA were involved in the murder of Paul Quinn.
However, it said this was contrary to the policy and instructions of the IRA leadership and it believed the killing was the result of a local dispute.
Sinn Féin has always denied republican involvement in Mr Quinn's death.
Over the past 14 years detectives have made 23 arrests - 14 in the Republic and nine in Northern Ireland.
They have followed 1,900 lines of inquiry and taken over 700 statements but no one has ever been charged with the murder.
