(AP) - State authorities say they've broken up a major fentanyl and heroin production mill in northern New Jersey that's been linked to dozens of overdoses, including 33 deaths.

Attorney General Gurbir Grewal announced Tuesday that four men have been charged in connection with the mill. He also says authorities seized about 70,000 individual doses of drugs along with four kilograms of suspected fentanyl and heroin in their takedown of the mill that was based in an Irvington apartment.

Three of the alleged ring members face charges of maintaining a narcotics production facility and possessing heroin with intent to distribute, along with several other drug and weapons charges.

The fourth defendant is charged with conspiracy to distribute narcotics, receiving stolen property and money laundering.