The checks were cashed in Fayetteville, Sanford, Lumberton, Clinton, Spring Lake, and throughout Sampson and Cumberland Counties before the scheme was discovered.
So far, seven suspects - Toboris Buie, Michael Blue, Bruce McKoy, Ronald Thaggard, Escellia Thompson, Shanee Burtwell, and Sadie Ellerbe - have been arrested.
They are charged with multiple counts of aiding and abetting to forgery, forgery, and uttering and obtaining property by false pretense.
Detectives are still searching for Marcus Allen of 5205 Delco Street in Fayetteville.
They say the suspects were able to defraud the jail by using counterfeit checks.
None of the people involved are county employees.