BOSTON — A Malden man has pleaded guilty in federal court in Boston to taking part in a conspiracy to sell methamphetamine, the U.S. attorney's office for Massachusetts said Friday.

Isaiah Pierre, 28, also known as "ZAY," pleaded guilty to conspiracy to distribute and to possess with intent to distribute 50 grams or more of methamphetamine, prosecutors said. U.S. District Judge Brian E. Murphy scheduled sentencing for Feb. 11, 2027. The charge carries a mandatory minimum of five years and up to 40 years in prison.

Pierre was charged in June 2024 along with his brother, Logan Pierre, also known as "LO."

According to prosecutors, an investigation into the brothers began in the fall of 2023 and found that they were selling methamphetamine in the greater Boston area. Between October 2023 and May 2024, the two sold or arranged the sale of a pound of methamphetamine in at least five controlled purchases, prosecutors said.

Logan Pierre was sentenced in July 2025 to 10 years in prison, to be followed by five years of supervised release, according to the U.S. attorney's office.

The FBI's Boston division and the Malden and Revere police departments took part in the case, prosecutors said.

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