Wilvyn Antonio Rosario Martinez, a 35-year-old Lynn, Massachusetts, resident, was arrested yesterday for allegedly selling fentanyl, firearms, and machine gun conversion devices in New York.
According to the U.S. Attorney for the Southern District of New York, Jay Clayton, Martinez is a self-proclaimed member of the Trinitarios street gang.
Martinez is charged with conspiring to distribute fentanyl, possessing firearms in connection with that conspiracy, and selling machine gun conversion devices, which can convert an untraceable firearm into a fully automatic machine gun capable of automatically shooting more than one shot without manual reloading.
The allegations state that Martinez and his associates traveled from Massachusetts to New York on five occasions between December 2024 and May 2025 to sell approximately 580 grams of powder fentanyl, counterfeit 30-milligram oxycodone pills, seven firearms, more than 100 rounds of ammunition, five firearm switches, and other firearm accessories.
The firearms included three loaded firearms, two firearms with partially defaced serial numbers, a rifle, and a privately manufactured, untraceable ghost gun. NYPD analysis confirmed that each one of the firearm switches was operable and could convert the ghost gun into a fully automatic machine gun.
Martinez is facing a mandatory minimum sentence of 10 years in prison and a maximum sentence of life in prison for the conspiracy charge.
U.S. Attorney Clayton stated, ‘As alleged, Rosario Martinez traveled from Massachusetts to New York to deal highly dangerous drugs and guns. Besides selling fentanyl in the form of counterfeit pharmaceutical pills, multiple loaded firearms, firearms with serial numbers partially defaced, and an untraceable ghost gun, he also allegedly sold switches to convert the ghost gun into a fully automatic machine gun.’
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Key Facts
- State: New York
- Category: Drug Trafficking|Violent Crime|Organized Crime
- Source: DOJ Press Release â†â€â€
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