Indiana Code Title 31. Family Law and Juvenile Law § 31-34-2-2

Sec. 2.  (a) A law enforcement officer may take a person into custody if the law enforcement officer has probable cause to believe that the person is the alleged perpetrator of an act against a child who the law enforcement officer believes to be a child in need of services as a result of the alleged perpetrator's act.  The law enforcement officer may take the alleged perpetrator into custody under this section only for the purpose of removing the alleged perpetrator from the residence where the child believed to be in need of services resides.

(b) The law enforcement officer shall immediately contact the attorney for the county department or another authorized person for the purpose of initiating a protective order under IC 31-34-25 that will require the alleged perpetrator to refrain from having direct or indirect contact with the child.