Police have charged four youths following two armed robberies at fast food outlets in Skye and Clyde North on 14 July.
The offenders allegedly targeted a store on Westernport Highway Skye and Berwick Cranbourne Road Clyde North, at 2:25 and 2:40am respectively.
On each occasion the group of seven offenders, reportedly armed with a knife, made off with a quantity of cash.
Police say a staff member from the Skye store was assaulted to the face during the first incident.
No one else was physically injured and police are continuing to search for the remaining offenders.
A 15-year-old Springvale South boy has been charged with armed robbery, theft, theft of motor vehicle and other offences.
A 15-year-old Cranbourne East boy has been charged with armed robbery, theft, theft of motor vehicle and other offences.
A 15-year-old Carrum Downs boy has been charged with armed robbery, theft and theft of motor vehicle.
A 13-year-old Doveton boy has been charged with armed robbery, theft, theft of motor vehicle and other offences.
They have been remanded to appear in a Children’s Court at a later date.