Grand juries impaneled in accordance with Article 415.1 shall remain impaneled for a period not to exceed one year unless discharged sooner by the court upon motion of the district attorney. Provided, however, that prior to the discharge of a grand jury by the court, a grand jury shall return its report on all offenses and matters presented or pending before it as authorized by the provisions of Article 444. Upon the request of the district attorney, the court may extend this time limit for an extra six months.
La. Cr.P. § 415.2