Missouri Revised Statutes Title XXVI. Trade and Commerce § 408.700. Subpoena issued under authority of grand jury, records, use of

(1) Shall be returned and actually presented to the grand jury;

(2) Shall be used only for the purpose of considering whether to issue an indictment or presentment by that grand jury, or of prosecuting a crime for which that indictment or presentment is issued, or for a purpose authorized by the applicable Missouri rules of criminal procedure;

(3) Shall be destroyed or returned to the financial institution if not used for one of the purposes specified in subdivision (2) of this section; and

(4) Shall not be maintained, or a description of the contents of such records shall not be maintained by any government authority other than in the sealed records of the grand jury, unless such record has been used in the prosecution of a crime for which the grand jury issued an indictment or presentment or for a purpose authorized by rules 5 and 6 of the Missouri rules of criminal procedure.