Among the suspects are a married couple, and a father and daughter. They also include a woman accused of selling heroin from the parking lot of an aquaintance's restaurant.
The U.S. attorney's office says 20 people were arrested Tuesday on an indictment charging them with conspiracy to distribute heroin.
Each would face a mandatory minimum sentence of 10 years if convicted.
Prosecutors say the ring was centralized in Queens. They say it had distribution networks in Nassau and Suffolk counties, and a storage facility in Brooklyn.
In the last nine months, members allegedly distributed heroin worth nearly $3 million on the street. Investigators used wiretaps and drug purchases to gather evidence.
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