According to officials, around 3:10 p.m., police responded a report of an armed robbery in the area of 35 Governor Winthrop Boulevard.
At the scene, officers learned that the suspect displayed a gun and threatened the victims.
Police later located the suspect, a 15-year-old boy, and found the firearm, which was identified as a BB gun.
The teen was arrested and charged with carrying a dangerous weapon and threatening, among other charges.
Anyone with information on the incident is asked to contact police at 860-447-5269 ext. 0.