Indiana Code Title 36. Local Government § 36-9-13-25

Sec. 25. (a) A lease under section 23 of this chapter may give one (1) or more of the lessees acting jointly or severally an option to purchase before the expiration of the term of the lease:

However, such a lease may not provide, or be construed to provide, that an eligible entity is under an obligation to purchase the leased government building or system or is under an obligation respecting any creditors or bondholders of the authority.

(b) An eligible entity that exercises an option to purchase may issue general obligation bonds for the purpose of obtaining enough money to pay the purchase price or its proportionate share of the purchase price.  The bonds shall be authorized, issued, and sold in the manner prescribed by law for the authorization, issuance, and sale of bonds of the eligible entity for other purposes.