The incident occurred on Friday, April 11, 2025, at the store in Helensburgh.
The youths were challenged by staff in the alcohol aisle and made off to the petrol station, where they reportedly stole more alcohol.
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They were again challenged by staff and left the area.
Officers later traced the gang, who were arrested and taken to Clydebank police station.
Police Scotland Argyle and West Dunbartonshire said: “On the morning of Friday, April 11, 2025, three youths from different areas of Scotland entered the Morrison’s store in Helensburgh, where they were challenged by staff in the alcohol aisle.
“After a verbal altercation, the youths made off to the petrol station, where a quantity of alcohol was taken, and again the youths left the area after being challenged by staff.
“A short time later, police traced the three youths nearby, where they were arrested and conveyed to Clydebank Police Station and charged with theft.”