Minn. R. Crim. P. 18.07
Every grand juror and every qualified interpreter for a grand juror with a sensory disability present during deliberations or voting must keep secret whatever that juror or any other juror has said during deliberations and how that juror or any other juror voted.
Disclosure of matters occurring before the grand jury, other than its deliberations and the vote of any juror, may be made to the prosecutor for use in the performance of the prosecutor's duties, and to the defendant or defense counsel under Rule 18.04 governing the record of the grand jury proceedings. Otherwise, no one may disclose matters occurring before the grand jury unless directed to do so by the court in connection with a judicial proceeding.
Unless the court otherwise directs, no person may disclose the finding of an indictment until the defendant is in custody or appears before the court, unless necessary for the issuance and execution of a summons or warrant. However, disclosure may be made by the prosecutor by notice to the defendant or defense counsel of the indictment and the time of defendant's appearance in the district court, if in the prosecutor's discretion the notice suffices to insure defendant's appearance.
Minn. R. Crim. P. 18.07