Federal authorities have dismantled a drug and firearms trafficking ring operating in the heart of Massachusetts, leading to the arrest and detention of eight individuals following a series of initial appearances in a Worcester federal court.
The sweep, announced by United States Attorney Leah B. Foley and Special Agent Thomas A. Greco of the Bureau of Alcohol, Tobacco, Firearms & Explosives (ATF), Boston Division, targeted a conspiracy operating in and around Worcester. According to court documents, the illicit operations took place between March 2026 and April 2026.
Federal prosecutors allege that six of the defendants—Alisa Walsh, 34, of Oakham; Osiris Berry-Vazquez, 23, of Worcester; Fendy Martinez, 35, of Worcester; Luis Muniz, 33, of Worcester; Luis Dick Rivera, 39, of Worcester; and Fernando Valentin-Perez, 45, of Worcester—sold controlled substances to undercover law enforcement officers and confidential informants. The trafficked narcotics allegedly included cocaine, crack cocaine, and fentanyl…