Five people, including two teenagers, have been arrested over the murder of a retired soldier in his home.
Two men in their late teens, another in his 40s and two women are being questioned over the killing of 71-year-old James Boyce.
The former soldier was found dead in an upstairs bedroom in his house on St Munchin's Street, St Mary's Park, Limerick, on March 7.
He had suffered head injuries.
It is understood neighbours raised the alarm after the pensioner did not answer his door to the local meals on wheels service.
Four of those arrested are being held on suspicion of withholding information and one is being questioned as the chief suspect for the attack.
Four are being held under Section 30 of the Offences Against the State Act 1939 and can be questioned for 72 hours, and the fifth for 24 hours under section 4 of the Criminal Justice Act 1984.
They are being held at Garda stations across the Limerick area.