Simon Marx, 42, died in Fethiye, Turkey, on 8 October after travelling there for a holiday the previous night.
It is believed Marx was involved in an altercation between two groups of men at the Newton Arms on Staining Road, Blackpool, in the early hours of Saturday 7 October morning, police have said.
However, the death is still being treated as "unexplained".
Lancashire police have confirmed four men have since been arrested on suspicion of murder in connection with the incident.
Three men aged 29, 54 and 29 have been bailed to 1 November. A fourth man aged 58 has been released pending further enquiries.
Thoughts with family and friends
DCI Andy Cribbin, from Blackpool police, said: “Firstly my thoughts are with the family and friends of this man during this extremely difficult time.
“At this stage, his sudden death is being treated as unexplained.
“We are in contact with the Turkish authorities and a post-mortem examination will take place in due course.
"We are looking at whether the incident involving the two groups could have contributed to his death and would encourage anyone who might have witnessed the altercation or has any information that could help."
Specially trained officers are supporting close family members at this time, police said.
In tribute, Marx’s family said in a statement: “We are all completely devastated by Simon’s sudden death.
"He was a much-loved father, son, uncle and brother and he will be sorely missed by us all.
“We would ask that we are given some privacy at this time to try and start to come to terms with what has happened to our family.”
Anyone with information should call Lancashire Police on 101 and quote log number 40 of 7 October.