BOSTON — A man from East Bridgewater has pleaded guilty in federal court in Boston to multiple charges in connection to a drug-dealing conspiracy.

Joshua Siereveld, 38, of East Bridgewater, pleaded guilty Wednesday to conspiracy to distribute and possess with the intent to distribute 400 grams or more of fentanyl, and possession with intent to distribute 40 grams or more of fentanyl.

Siereveld will be sentenced on September 16. The charges carry a minimum of ten years in prison and fines of up to $18 million.

From December 2017 to January 2018, investigators intercepted hundreds of communications between Siereveld and his fentanyl supply source in Lawrence. Over the next two months, Siereveld was found to have purchased over a kilogram and a half of fentanyl. He was assisted in the transactions by co-defendant Justin Brunick, 29, of Rockland, who served as a courier.

On March 14, 2018, Siereveld was stopped in his vehicle by investigators who seized approximately 130 grams of fentanyl. Siereveld was placed under arrest.

Brunick pleaded guilty to his role in the fentanyl conspiracy on April 19, 2019 and will be sentenced on July 17.