Thirty-seven year-old Rebecca Hiller is the latest arrest.
She's charged with engaging in organized criminal activity for forgery and is out of the Wichita County Jail on a $10,000 bond.
In the scheme, blank checks were offered for sale on Craigslist for $100 a piece with advice on where they could be passed.
Officers say they expect more than a dozen people to be arrested in the scheme.
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