Rules on Civil Procedure
Section 1. Depositions pending action, when may be taken. - By leave of court after jurisdiction has been obtained over any defendant or over property which is the subject of the action, or without such leave after an answer has been served, the testimony of any person, whether a party or not, may be taken, at the instance of any party, by deposition upon oral examination or written interrogatories. The attendance of witnesses may be compelled by the use of a subpoena as provided in Rule 21. Depositions shall be taken only in accordance with these Rules. The deposition of a person confined in prison may be taken only by leave of court on such terms as the court prescribes. (1a, R24)