GRAND ISLAND, Neb. — Nebraska Auditors say that Hall county was overcharged tens of thousands of dollars on a lease for the Extension office in Grand Island.

The letter from the state auditor says that College Park charged hall county more than $40,000 for administrative costs that were not allowed in the lease.

According to the letter, "The County entered into an agreement in December 1990 with College Park for the purchase of land and construction of a building, which would include a portion that would be leased to the County as the Hall County Building Area for a term of 40 years with an option to extend... for four separate and successive periods of 10 years."

Auditors also found county funds in a reserve account were mixed with other College Park money, meaning the county didn't get all the interest it earned.

College Park has moved the county's funds to a separate account and is working with the county to fix the lease.