DULUTH — Duluth police said they’ve taken down a major heroin dealer in the city.

Charges were filed against Antonio Dantinue Long Monday in state District Court. He’s accused of possessing more than 25 grams of heroin and cocaine, selling a controlled substance and being a felon in possession of a firearm.

Long’s arrest is in conjunction with a coordinated crackdown on the heroin trade in Minnesota. Last month, U.S. Attorney Andy Luger said the arrest of more than 65 people suspected of selling heroin was a blow to international drug cartels.

Police are still searching for about a dozen additional area suspects in connection with Operation Exile.