Two men continue to be questioned by gardai about the murder of a Limerick teenager who was found dead after being missing for 18 months.
The body of Richard "Happy" Kelly (17), O'Malley Park, was found in Lough Brigid near O'Callaghan Mills, Co Clare, last November. He had been missing from his home in Limerick city since April 23rd, 2006.
One woman and four men aged between 20 and 36 were arrested on Tuesday at a number of addresses in Limerick as part of a planned operation.
The woman and two men were released today. The other two men are being detained at Shannon garda station.