Ind. Code § 8-21-9-35

Sec. 35. A member, agent, or employee of the department who knowingly is interested in any contract with the department or in the sale of any property, either real or personal, to the department commits a Class A misdemeanor. All such contracts are void. This section does not apply to contracts for purchases of property, real or personal, between the department and other departments, municipalities, or subdivisions of state government.