It is believed that this represents the DEA's largest seizure of a fentanyl precursor in the New England Region in recent years,'' according to a statement by the US attorney's office.

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June 9, 2017

About 50 kilograms of a fentanyl precursor with a potential street value of $570 million was seized by federal and local law enforcement in Northborough, authorities announced Friday.

"It is believed that this represents the DEA's largest seizure of a fentanyl precursor in the New England Region in recent years,'' according to a statement by the US attorney's office.

The Drug Enforcement Administration, working with officers from the Northborough, Westborough, and Worcester Police Departments, raided a Northborough storage facility and seized the chemical N-Phenethyl-4-piperidinone, also known as NPP, on May 25, according to the statement.