Hobsons Bay Crime Investigation Unit detectives have arrested three girls and a woman following an alleged affray at Altona North.
Detectives have been told a 14-year-old girl and her friends were approached by five females at a pier near the Esplanade and Pier Street on Wednesday 28 February about 4.30pm.
It is alleged the group assaulted the girl before an unknown male intervened.
The girl was taken to hospital with non-life-threatening injuries.
An 18-year-old woman from Flemington has been charged with affray, intentionally cause injury, recklessly cause injury and assault by kicking.
She has been bailed to appear at Melbourne Magistrates' Court on 25 May.
A 14-year-old girl from Point Cook was charged with affray intentionally cause injury, recklessly cause injury and assault by kicking.
She will face a children's court at a later date.
A 14-year-old girl from Kings Park and a 14-year-old girl from St Albans were released pending summons for affray, intentionally cause injury, recklessly cause injury and assault by kicking.
The investigation into the incident is ongoing.
Anyone with information or who witnessed the incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au
