Missouri State Auditor Susan Montee has started an audit of Benton County.
The state routinely audits small counties every four years, because they do not have their own auditors, said Samantha Brewer, a spokeswoman for Montee.
A team of auditors is reviewing county records as a part of the fieldwork.
The audit could take six months to one year.
People who have information or concerns may call 1-800-347-8597.