The New Haven Police Department issued a warning Friday, saying New Haven and Fort Wayne residents are getting scam letters in the mail, asking them to evaluate their local Walmart stores.
The scheme asks them to inspect a store, complete a form and then cash a check that comes with it.
Residents are asked to keep a portion of the money and send the rest in the form of a money order to a person named in the letter.
The police department said the check is fraudulent and that banks will hold people who cash the check responsible for the full amount.
The letters title says Canadian Paid Surveys.
Anne Gregory of The Journal Gazette contributed to this story.