Boston Man Pleads Guilty to Trafficking Firearms

BOSTON - A Boston man pleaded guilty yesterday in federal court in Boston to firearm charges.

Jairo Valdivieso, 24, pleaded guilty to one count of firearms trafficking and one count of engaging in the business of dealing in firearms without a license. U.S. District Court Judge Nathaniel M. Gorton scheduled sentencing for Jan. 12, 2026.

On three occasions between December 2025 and March 2026, Valdivieso sold firearms to an undercover federal agent. Specifically, on Dec. 30, 2025, Valdivieso, through two associates, sold a firearm to an undercover agent in Boston. On Feb. 6, 2026, Valdivieso, again through two associates, sold a firearm to an undercover agent in Roxbury and on March 29, 2026 Valdivieso sold another firearm to an undercover agent in Boston.

The charge of firearms trafficking provides for a sentence of up to 15 years in prison, three years of supervised release and a fine of up to $250,000. The charge of engaging in the business of dealing in firearms without a license provides for a sentence of up to five years in prison, three years of supervised release and a fine of $250,000. Sentences are imposed by a federal district court judge based upon the U.S. Sentencing Guidelines and statutes which govern the determination of a sentence in a criminal case.

United States Attorney Leah B. Foley and Thomas Greco, Special Agent in Charge of the Bureau of Alcohol, Tobacco, Firearms & Explosives made the announcement today. Valuable assistance was provided by Boston Police Department and Massachusetts State Police. Assistant U.S. Attorney Allegra K. Flamm of the Major Crimes Unit is prosecuting the case.