BOSTON (CBS) – A man and woman were arrested in Dewey Square for allegedly selling heroin to an undercover police officer.

Thirty-four-year-old Isaac Bell and 31-year-old Charlene Dumont both face drug charges. The two were living in a tent with Occupy Boston protesters on the Rose Kennedy Greenway.

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Boston Police officers had been aware of drug activity in the park, and went in to investigate.

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According to police, an undercover officer bought heroin from Bell in the men’s bathroom at South Station. Uniformed officers arrested Bell when he returned to his tent in Dewey Square.

Officers recovered the money used to buy the drugs as well as a small bag of heroin and empty plastic bags.

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Dumont was arrested for her alleged role in the drug deals. Dumont and Bell were ordered to stay away from the Occupy Boston encampment.