Arin Kay Nesbitt, 50, is accused of stealing an undisclosed amount of money from her Canyon County employer, the Southwest Idaho Resource Conservation and Development Council.
Nesbitt worked as a bookkeeper for the non-profit agency. She is accused of writing numerous unauthorized checks, forging authorized signatures and depositing the checks into her personal accounts at a bank in Emmett.
Authorities said Nesbitt concealed the thefts by altering accounting records. The thefts took place over a three-year period beginning in January 2010, Canyon County authorities said.
The Canyon County Sheriff's Office was notified by agency officials last August of their suspicions that Nesbitt was stealing from them. The two-month investigation led to charges of grand theft by embezzlement, computer fraud and 15 counts of forgery to be filed against Nesbitt.
Nesbitt was taken into custody on Friday and is scheduled to be arraigned Friday in Third District Canyon County Court.