A person has been taken to hospital with moderate injuries after a violent incident on Wellington's Courtenay Place overnight.
Police said they were called to a group of people fighting at a bar around 1am Friday.
No arrests have been made but inquiries are continuing.
Anyone who witnessed what happened is being asked to contact police on 105, quoting file number 210521/5566.
A post on social media referred to bar property being destroyed, dangerous drugs being consumed and a person being badly beaten.