A major Garda operation is continuing in Cork after the murder of a man aged in his 60s in the city.
It follows the discovery of a partially dismembered body in the garden of a derelict site at Castlegreina House on the Boreenmana Road on Saturday.
The victim of the attack has been officially identified as 64-year-old Francis Dunne.
He had been engaging with homeless services in the city.
A post mortem examination has been completed by locum State Pathologist Dr Heidi Okkers.
A preliminary report has been given to investigating Gardaí.
However they say details are not being provided for operational reasons.
The body was found by a local man who raised the alarm.
The Inner City Helping Homeless charity described the killing as "barbaric".
This is just barbaric.
R.I.P Frankie and condolences to his family and friends on their loss https://t.co/LIfII0RCf5
— ICHHDUBLIN (@ICHHDUBLIN) December 29, 2019
Speaking on Sunday, Superintendent Michael Comyns said: "An incident room has been established at Anglesea Street Garda station and a senior investigating officer has been appointed.
"Gardaí are currently harvesting CCTV footage and carrying out door to door enquiries in the area."
"We are appealing to anyone who can assist us with our investigation to contact us.
"The discovery was made at a derelict site on Boreenmanna Road, along a busy traffic route in and out of the city centre.
"We are appealing to both motorists and pedestrians who may have been in the area since Christmas Day to come forward.
"We are particularly appealing to motorists to make any camera footage, including dash-cam, from the area available to us."
Anyone with information is asked to contact Bridewell Garda station on 021-4943-330, the Garda Confidential Line at 1800-666-111 or any Garda station.
Gardaí have made no arrests so far.