Melbourne Crime Investigation Unit detectives are appealing for witnesses following an affray in the Melbourne CBD earlier this year.
Investigators have been told a brawl involving about 100 people occurred on the corner of Flinders Street and Katherine Place on Sunday 28 March around 3.15am.
Police have released the photos of 10 men they believe can assist with their enquiries.
Investigators believe there were a large number of people who witnessed and filmed the incident, as well as the lead up to the incident, and are appealing for them to come forward.
The investigation into the incident remains ongoing, and police urge anyone with information to contact Crime Stoppers on 1800 333 000 or log onto www.crimestoppersvic.com.au.