One man has been charged with murder and five men with affray after the Comanchero commander died in a violent brawl outside Kokomo's nightclub in Civic on July 19.

ACT Policing has released photos of seven women who were outside the venue around midnight.

Investigators believe they have information relevant to the investigation.

Police hope they will recognise themselves and come forward to share what they may have seen or heard that night. Their faces have been hidden for privacy reasons.

ACT Policing Detective Superintendent Scott Moller said investigators were working through hours of CCTV footage and thanked the community for coming forward.

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"This investigation is complex. Officers have so far spoken with many helpful people and reviewed many hours of CCTV footage," he said.

"As we speak to more witnesses, we have identified other people we would like to speak with. Many people who were in Civic on Saturday, July 18 and Sunday, July 19 may not even realise the significance of the information they have.

"Even the smallest piece of information can make a big difference."

ACT Policing is urging anyone who may have any further information in relation to the murder of Pitasoni Ulavalu to contact Police on 131 444, or Crime Stoppers on 1800 333 000. Please quote reference 6578758. Information can be provided anonymously.