Louisiana Revised Statutes Tit. 13, § 4866. Examination of witnesses

The plaintiff may cause summons to issue to the defendant, if a natural person, or to any officer of a defendant corporation, or to any person not a defendant residing in the parish where the action is pending, to appear as a witness at any time fixed by the court for the taking of testimony. The plaintiff may examine any such witness as under cross-examination, but he shall not become thereby the plaintiff's witness and his testimony shall not be binding on the plaintiff in any other action. The defendant under examination or an officer of a defendant corporation under examination may make a relevant statement as part of his testimony, but the defendant shall not be permitted to question any witness.