Three people have been arrested in connection with the murder of 40-year-old Noel Crawford in Limerick last December.
Mr Crawford was shot outside his parents' home in O'Malley Park in Southill in the early hours of 18 December 2006.
Two women and a man were arrested at locations in Limerick and Dublin this morning.
They are being held for questioning at garda stations in Limerick and Dublin.
