Indiana Code
Chapter 5. Uniform Act to Secure the Attendance of Witnesses From Outside the State in Criminal Proceedings
35-37-5-7. Federal Prisoner Summoned to Testify in This State

Sec. 7. When:
(1) a criminal action is pending in a court of record of this state by reason of an indictment or affidavit, or by reason of the commencement of a grand jury proceeding or investigation;
(2) there is reasonable cause to believe that a person confined in a federal prison or other federal custody, either within or outside this state, possesses information material to such criminal action; and
(3) the attendance of such person as a witness in such action is desired by a party;
the court may issue a certificate, known as a writ of habeas corpus ad testificandum, addressed to the attorney general of the United States, certifying all such facts and requesting the attorney general of the United States to cause the attendance of such person as a witness in such court for a specified number of days. Such a certificate may be issued upon application of either the state or a defendant demonstrating all facts specified in subdivision (1). Upon issuing such a certificate, the court may deliver it, or cause or authorize it to be delivered, to the attorney general of the United States or to his representative authorized to entertain the request.
As added by P.L.311-1983, SEC.2.