Homicide Squad detectives are appealing for witnesses as they continue to investigate the death of a man in Eildon last month.

Investigators have been told a group of people had a physical altercation outside licensed premises on Goulburn Valley Highway just before midnight on 20 October.

The altercation resulted in the death of a 51-year-old Frankston man after he fell and struck his head.

Detectives have spoken to a number of witnesses to the altercation; however they believe there are a number of persons who were present that are yet to speak to police.

Investigators are appealing for anyone who witnessed the incident who has not yet spoken to police to contact Crime Stoppers.

Three men who were arrested following the incident were released pending further enquiries.

Anyone with any information or who may have witnessed the incident is urged to call Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au