Police say a major investigation into heroin distribution in Penobscot, Hancock and Washington counties led to the arrest of five people on felony drug trafficking charges.

Police on Thursday night arrested one man from New Haven, Connecticut, and four from Maine and seized 50 grams of heroin worth about $15,000 and a sawed-off shotgun, the Maine Department of Public Safety said in a news release Friday.

The arrests are the result of a lengthy investigation by the Maine Drug Enforcement Agency, Bangor police, the U.S. Drug Enforcement Administration and the Maine Attorney General’s Office.

Police charged Dionhaywood “Smooth” Blackwell, 31, of New Haven, with aggravated trafficking in heroin, a Class A felony. Police also charged Vincent J. Berube, 50, and William E. Berube, 48, who are brothers from Baileyville, and Daniel Lyons, 41, and Laura Lyons, 29, a married couple who live in Bangor, with Class B trafficking in heroin.

The investigation included several undercover purchases of heroin from the Lyons’ Essex Street home in Bangor, where the arrests were made, police said.

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