Overview
- An on-site officer at the South Shore Technical High School prom in Kingston responded to a parking-lot argument that escalated Thursday night when an attendee allegedly threatened a student and displayed a black semiautomatic-style pistol.
- Police identified the suspect as 18-year-old Adrian Arroyo of Randolph, who surrendered peacefully at his home after officers canvassed witnesses and issued a regional law-enforcement bulletin.
- Investigators executed a court-authorized search of a vehicle at Arroyo’s Randolph residence and seized a black Crossman BB-gun replica from the glovebox that matched victims’ descriptions; no real firearms were found.
- Arroyo faces multiple felony charges, including assault with a dangerous weapon, and the investigation has been turned over to the Plymouth County District Attorney’s Office with an arraignment expected in Plymouth District Court.
- No injuries were reported, police increased security at the prom, and the incident underscores how realistic replica guns can trigger swift criminal charges and long-term emotional impact on students and event safety protocols.