Ind. Code § 16-22-7-35

Sec. 35. The proceeds from bonds issued under this chapter, after reimbursement for preliminary expenses as provided in section 14 of this chapter and payment for land, shall be applied to the payment of the costs of the buildings on account of which the bonds are issued, including incidental expenses and interest during construction. Until the proceeds are applied as required in this section, the proceeds are subject to a lien in favor of the bondholders or the trustees.