Ind. Code § 35-37-3-1
(b) If the prosecuting attorney has reason to believe that a witness will refuse to answer a question or produce an item during any criminal trial, the prosecuting attorney may submit the question or request to the trial court. The court shall hold a hearing to determine if the witness may refuse to answer the question or produce the item.
As added by Acts 1981, P.L.298, SEC.6.