BOSTON (AP) – Six people have pleaded not guilty to drug trafficking charges after police found them with 84 kilos of cocaine, with an estimated street value of $8.4 million.

The suspects face up to 20 years in state prison if convicted on charges of trafficking cocaine over 200 grams.

The five men, from Boston, Chicago, Texas and Arkansas, and woman from Mexico were arraigned Monday in Lynn District Court, two days after they were arrested in Lynn.

A two-year investigation led by the Essex County Drug Task Force led to the arrests.

Police allegedly saw the suspects offloading cocaine from a flat bed tractor trailer unit on Saturday. The suspects allegedly put the substance into suitcase-like containers, which were then put into a pick-up truck. They were detained shortly after that.

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