Missouri Revised Statutes Title XXXVII. Criminal Procedure § 542.406. Disclosure of contents--privileged communications

1. Any investigative officer or law enforcement officer who, by any means authorized by sections 542.400 to 542.422, has lawfully obtained knowledge of the contents of any wire communication, or evidence derived therefrom, may disclose such contents to another investigative officer or law enforcement officer to the extent that such disclosure is necessary to the proper performance of the official duties of the officer making or receiving the disclosure for investigative purposes only.

2. Any investigative officer or law enforcement officer who, by any means authorized by sections 542.400 to 542.422, has lawfully obtained knowledge of the contents of any wire or oral communication, or evidence derived therefrom, may use such contents to the extent such use is necessary to the proper performance of his official duties.

3. Any person who has received, by any means authorized by sections 542.400 to 542.422, any information concerning a wire communication, or evidence derived therefrom, intercepted in accordance with the provisions of sections 542.400 to 542.422 shall disclose the contents of that communication or such derivative evidence while giving testimony under oath or affirmation in any criminal proceeding, including deposition in any court or in any grand jury proceeding, subject to the rules of evidence.

4. No otherwise privileged wire communication intercepted in accordance with, or in violation of, the provisions of sections 542.400 to 542.422 shall lose its privileged character and shall be suppressed upon motion.