Ind. Code § 29-1-7-8
Whenever there is any doubt that the person whose estate is to be administered is dead, the court, upon application of any interested person, may direct the personal representative to make search for the alleged decedent in any manner which the court may deem advisable, including any or all of the following methods:
(c) By engaging the services of an investigation agency.
Formerly: Acts 1953, c.112, s.708.