Gardaí in Limerick are continuing to question a man who was arrested last night for questioning about the 1986 murder of 19-year-old Aidan Kelly.
Mr Kelly was found with gunshot wounds in a field near Ardnacrusha in Co Clare in May 2006.
Mr Kelly, from College Avenue in Moyross, had driven his car to a road in Blackwater near Ardnacdrusha in Co Clare on the night of 10 May 2006.
He was found with a number of gunshot wounds in a laneway closeby. A firearm was found near his body, but it was not believed to be the murder weapon.
It was thought at the time Mr Kelly may have been lured there by his killers in the belief that he might recover a van belonging to him which had been stolen the day he died.
Mr Kelly had been before the courts for a number of road traffic and car theft offences, and had been on bail for a number of house robberies at the time.
It was not believed he was involved in gang-related crime, but gardaí were investigating if feuding gang figures were involved in his murder.
The man detained last night, who is in his 30s, is the first person to be arrested for questioning in the 13-year-long case.
He is being held at Henry Street Garda Station in Limerick.