Relatives of Paul Quinn are due to meet Garda Commissioner Fachtna Murphy in Dublin today to discuss the investigation into the murder of the 21-year-old last year.
The Quinns, who will be accompanied by SDLP deputy leader Alisdair McDonnell, are also due to meet TDs from the various political parties.
Mr Quinn, from south Armagh, was beaten to death by a gang of men after being lured to a remote farm in Co Monaghan in October 2007.
His family has blamed IRA members for the killing, saying he had fallen foul of local republicans in south Armagh and had been ordered to leave the country.
Sinn Féin has denied any republican involvement in the murder.
Several people have been arrested and questioned on both sides of the border, but nobody has been charged in connection with the case.