Indiana Code Title 35. Criminal Law and Procedure § 35-33-7-2

Sec. 2. (a) As used in this section, “affiant” means the person who submits the facts upon which an arrest has been made:

(b) At or before the initial hearing of a person arrested without a warrant for a crime, the facts upon which the arrest was made shall be submitted to the judicial officer, ex parte, in a probable cause affidavit.  The affidavit must be prepared and filed in accordance with section 8 of this chapter.  In lieu of the affidavit or in addition to it, the facts may be submitted orally under oath to the judicial officer.  If facts upon which the arrest was made are submitted orally, the proceeding shall be recorded by a court reporter, and, upon request of any party in the case or upon order of the court, the record of the proceeding shall be transcribed.

(c) In addition to the facts described in subsection (b), the affiant shall disclose any known personal, financial, or familial relationship with:

if the relationship could reasonably be perceived to affect the affiant's objectivity or impartiality.

(d) If the judicial officer determines that there is probable cause to believe that any crime was committed and that the arrested person committed it, the judicial officer shall order that the arrested person be held to answer in the proper court.  If the facts submitted do not establish probable cause or if the prosecuting attorney informs the judicial officer on the record that no charge will be filed against the arrested person, the judicial officer shall order that the arrested person be released immediately.