BURLINGTON (CBS/AP) — A man wearing a gas mask and another carrying a container of paint thinner tipped police off to a possible methamphetamine manufacturing lab in a Burlington hotel.

Three suspects are scheduled to be arraigned Monday in Woburn District Court.

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Police began investigating after employees at the Sonesta ES Suites hotel on Old Concord Road noticed the suspicious behavior, which included a man with an ankle bracelet, a foul odor emanating from a room, and an unusual amount of people coming and going from the room.

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The men were arrested Friday after police executed a search warrant and found a large amount of methamphetamine inside the room, and plastic bags over the smoke detectors.

The suspects were identified as 24-year-old Eric Somwick and 52-year-old Tony Pickard, both from Manchester, New Hampshire; and 32-year-old Dustin Robert Beliveau of Burlington.

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