The family of Billy Henham, whose body was discovered at a building in Brighton, have paid tribute to their son.
The 24-year-old from Henfield was found dead at a building in North Street following a report of concern for a person on January 2.
Police said a post-mortem examination revealed he died of his injuries following a sustained assault.
Four men and a boy were arrested on suspicion of murder.
An 18-year-old man from Greenwich, a 16-year-old boy of no fixed address, a 26-year-old man from Hove, a 25-year-old man of no fixed address and a 19-year-old man from Croydon.
Officers said they were all released on bail subject to strict conditions, pending further enquiries.
The statement from his family said:
“Our son Billy was a man who walked his own beat, creative and independent.
“His gentle demeanour and belief that the world was a friendly place meant he made himself vulnerable at times.
“His guardian angel who had looked after him on so many other occasions sadly lost sight of him on New Year’s Eve.
“So many people have kindly shared their happy memories of him with us, their love and kind words are giving us all huge support at this terrible time.”
The family asked the media to respect their privacy.
DCI Alex Geldart said:
“My thoughts are with the family and friends of Billy at this very difficult time.
“Our investigation into his death continues at pace and at this time we would ask for anyone who may have information that might help our enquiries to come forward.
“We are particularly keen to understand Billy’s movements in the city on New Year’s Eve (December, 31) from 6pm onwards.
“He left his home address in Henfield before travelling to Brighton.”
Anyone with information is asked to contact 101, quoting Operation Gatling.
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