Deerfield and Greenfield police are warning residents in their towns of a scam.
Police say the Bement School alerted them that someone is sending out express mail with letters and checks referencing a fundraiser for the school.
The checks say "Greenfield Cooperative Bank" on them.
Police say if you get one to alert them or just throw it away.
They believe it may have a connection to a Craigslist ad.
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