Irish holidaymaker Paul Houston died from a brain haemorrhage following a severe beating, a postmortem has confirmed.
Some earlier reports in Portugal had suggested the father-of-four was stabbed. But no knife wounds were revealed by the autopsy. The 51-year-old was attacked in a suspected robbery while on an annual trip to the Algarve.
Mr Houston, originally from Derry but who lived in Co Donegal, was president of Greencastle Golf Club.
He was on a yearly golf holiday with his wife Celine and friends Philip and Marian Devlin when the tragedy happened.
A postmortem carried out at the Institute of Legal Medicine in Portimao confirmed he had died from blows to the head.
Portuguese authorities yesterday released his body and preparations were under way for its return to Ireland.
He is expected to be buried in Greencastle, Co Donegal, at 11am on Monday.
Police are looking for two Brazilian men seen in the area shortly before Mr Houston was found in a pool of blood in the seaside town of Alvor.