Whittlesea Crime Investigation Unit detectives have now arrested all seven people allegedly involved in an affray at a Preston shopping complex on Sunday.
An 18-year-old Thornhill Park man was arrested Tuesday night and has been charged with affray and weapons offences.
He has been remanded to appear in Heidelberg Magistrates' Court tomorrow, 28 May.
A further two male youths were arrested this morning by investigators.
An 18-year-old Derrimut man has since been charged with affray and intentionally cause injury.
He was bailed to appear at Heidelberg Magistrates' Court on 16 July.
A 21-year-old Kew man, who was treated at hospital with non-life-threatening head injuries from the incident, was charged with affray, intentionally cause injury and commit indictable offence whilst in bail.
He was bailed to appear at Heidelberg Magistrates' Court on 15 July.
Initially believed to be eight people involved, further investigations determined seven people from rival youth gangs began fighting while allegedly armed with machetes, at the shopping complex on Murray Road just after 2.30pm.
CCTV indicates the affray lasted for approximately two minutes, with around 40 local police and specialist units, including the Public Order Response Team and Critical Incident Response Team, arriving on scene within minutes.
Police will allege this was a planned fight between two rival youth gangs, with thankfully no innocent bystanders hurt.
Two teenage males, alleged to be the primary offenders, were arrested at the scene.
A 16-year-old boy from the Darebin area and a 15-year-old boy from the Melton area were subsequently charged with affray, intentionally cause injury, possess controlled weapon, and use controlled weapon.
They were remanded to appear at a children's court.
Two men were also arrested in relation to this incident yesterday.
This includes a 20-year-old Thornbury man charged with affray, intentionally cause injury, and commit an indictable offence while on bail.
An 18-year-old Bundoora man has also been charged with affray and intentionally cause injury.
Both were bailed to appear at Heidelberg Magistrates' Court on 15 July.
Those arrested were all known gang members and known to police.
A total of three edged weapons have been seized by police.
One offender remains outstanding, and police are making enquiries into his whereabouts.
Police will be patrolling the area over the coming days and weekends, while local police will also engage with shopping centre management and retail staff to reassure and most importantly, thank them for their efforts yesterday.
Victoria Police continues to relentlessly pursue, disrupt, and dismantle the state's worst youth gangs as part of Operation Alliance.
In the past year alone, Operation Alliance has led to the arrest of 473 youth gang members a combined 1,731 times. Over 4,400 charges have been laid in relation to these matters.
Anyone with information or footage is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.
