Casey Crime Investigation Unit detectives have charged four teenagers following an alleged affray in Endeavour Hills on Wednesday, 30 April.
It is understood five teenage girls attended a shopping centre on Heatherton Road just before 4pm.
Police will allege the group attended five stores in the shopping centre, stealing a number of items from each.
When a passerby attempted to intervene outside the third store, he was struck with a glass bottle.
The 55-year-old Drouin man was taken to hospital with non-life-threatening injuries.
Four teens were arrested at the scene and were interviewed by detectives.
A 16-year-old girl from the Yarra Ranges area was charged with Attempted robbery, affray, theft (5), recklessly causing injury, assault in company and commit indictable offence whilst on bail
A 15-year-old girl, also from the Yarra Ranges area, was charged with Robbery, affray, theft (5), assault in company, possess controlled weapon and commit indictable offence whilst on bail
The pair were remanded in custody and bailed the following day to appear before a children's Court at a later date.
A 16-year-old girl from the Greater Dandenong area was charged with Theft (5), affray, recklessly cause injury, assault in company and commit indictable offence whilst on bail
A 13-year-old girl, also from the Greater Dandenong area, was charged with Theft (5) and affray.
The pair were bailed to appear before a children's court at a later date.
The investigation remains ongoing in relation to the fifth female.
Anyone who witnessed the incident, has CCTV/dashcam footage or information is urged to contact Crime Stoppers on 1800 333 000 or www.crimestoppersvic.com.au
