Police were called to Werribee Plaza in Hoppers Crossing after reports a machete-wielding gang of six assaulted a 14-year-old boy in the centre’s carpark about 4.40pm.
The teenager was taken to hospital with non-life-threatening injuries.
The offenders then fled the scene in a black Hyundai i30 sedan, police said.
No arrests have been made and police are now looking for the group of six men.
An investigation remains ongoing.
Anyone with information is urged to contact police or Crime Stoppers on 1800 333 000.
