On the completion of the business before the grand jury, or completion of the statutory time limit for sessions of a grand jury, or whenever the court shall be of the opinion that the public interests will not be subserved by further continuance of the session, the grand jury must be discharged, but whether the business be completed or not they are discharged by the final adjournment of the court, or by the judge of the district holding court in some other county of the state, not within the judicial district in which the grand jury is called.
R.L.1910, § 5715; Laws 1961, p. 236, § 1.