Six people have been arrested in connection with the death of Jeffrey Hannon in Limerick.
The 19-year-old father of one was found dead in a housing estate at Galtee Drive last November.
One person was arrested yesterday and a further five were arrested this morning.
All six people, two men and four women, are in their late teens to mid-twenties and are from the south of Limerick city.
They are being detained at various stations in Limerick and there have been follow-up searches around the city.