Victoria Police say the young alleged offenders, a boy aged 13 and three boys aged 15, first targetted a store on the Westernport Highway at Skye at around 2.25am.
The group then travelled to another venue roughly 15 minutes later on Berwick Cranbourne Road at Clyde North.
Each time the teens, who were armed with knives, made off with cash and intimidated staff.
It’s understood they may also have been travelling in a stolen car.
At the Skye outlet, a staff member suffered face injuries during an altercation, though it’s understood no one else was injured.
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A Springvale South boy, 15, a Cranbourne East boy, 15, a Carrum Downs boy, 15, and a 13-year-old Doveton boy were each charged with armed robbery, theft and theft of a motor vehicle.
They have been remanded to appear in a Children’s Court at a later date.
Police believe there are another three young people who were involved in the alleged crimes and are now on the hunt for information to track them down.
Anyone who may know more about the incidents are urged to contact police or Crime Stoppers.
Investigations continue.