A group of six young people allegedly assaulted a woman in Civic earlier this month.
The woman was taken to hospital after the alleged incident for her injuries to be treated.
Police allege the group attacked the woman on City Walk between Ainslie Place and Akuna Street, about 8.40pm on November 3.
As part of the investigation into this incident, police would like to speak to anyone who witnessed the assault who has not already spoken to police.
In particular police, would like to speak to a man who confronted the alleged offenders and assisted the woman.
He is described as being bald, of solid build, and wearing shorts and a black short-sleeved shirt.
Anyone with information that could help police is urged to contact Crime Stoppers on 1800 333 000, or via the Crime Stoppers ACT website and quote reference 6667340. Information can be provided anonymously.