Two other suspects, a 20 year-old male, and a 17-year-old female were interviewed and released without charges.
An 18-year-old male was released, but might be summoned into court if a state drug test comes back positive for a Class E narcotic (prescription).
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"Until we get confirmation from the Massachusetts state drug lab, we believe it is Ritalin," McNamara said.
She also said that the two people taken into custody were able to bail themselves out of jail.
"They were in the wrong place at the wrong time to be doing business," McNamara said.