An investigation into a brawl between two groups is continuing.

Police are appealing for any information about the fight outside a Hood Street Bar in Hamilton at about 1.30am on Saturday.

An altercation between two groups resulted in all three members of one group being admitted to Waikato Hospital with injuries Police believe were caused by a knife or sharp object, says Detective Sergeant Andre Kavanagh.

'All three have since been discharged.

'Hamilton Police believe three males – pictured – will be able to assist us with our investigation and would appreciate the public's assistance to identify the individuals.”

Any information should be shared with Detective Sergeant Andre Kavanagh of Hamilton Police Station on 07 858 6200.

Alternatively, information may be shared anonymously with Crimestoppers on 0800 555 111.