Dominican national pleads guilty to selling gun and fentanyl to undercover agent in Boston
Junior Martinez-Perello, 27, admitted a federal drug distribution charge stemming from a May 2025 deal in Boston, prosecutors said. A gun he was selling went off during the sale, according to the U.S. attorney's office.
A 27-year-old man described by federal prosecutors as an associate of the D Street Projects gang in South Boston pleaded guilty Sept. 2 in federal court in Boston to selling fentanyl to an undercover agent, the U.S. attorney's office said.
Junior Martinez-Perello pleaded guilty to one count of possession with intent to distribute, and distribution of, fentanyl, prosecutors said. He was arrested and charged in July 2025.
According to the U.S. attorney's office, Martinez-Perello was in contact with an undercover agent in May 2025 about selling 100 grams of fentanyl and a gun, and agreed to meet in Boston for the deal on May 30, 2025. Prosecutors said he told the agent that he would always have guns available and that he expected to be able to supply half-kilogram quantities of fentanyl.
During the sale, Martinez-Perello explained how the gun's safety worked and then pointed the loaded weapon at the ground while apparently trying to unload it, prosecutors said. In doing so he switched off the safety and fired a round into the floor, according to the U.S. attorney's office.
Prosecutors said Martinez-Perello is a Dominican Republic national who was in the United States illegally.
The drug charge carries up to 20 years in prison. Sentencing is scheduled for Jan. 6, 2027, before U.S. District Court Judge Myong J. Joun.
This brief was drafted by AI from a public agency press release and published by The New England Signal. Why we use AI for stories like this one.