No director, officer, agent, or employee of the district shall be directly or indirectly interested in any contract for the purchase of any property or construction of any work by or for the district, and if any such person shall be or become so interested in any such contract, he shall be guilty of a felony and, on conviction thereof shall be subject to a fine in an amount not exceeding Ten Thousand Dollars ($10,000.00) or to confinement in the county jail for not less than one (1) year nor more than ten (10) years, or both.
Okla. Stat. tit. 82, § 867