Section 191: Official communications.

No public officer shall be compelled to disclose communications made to him in official evidence when he considers that the public interests would suffer by the disclosure.
Provided that the public officer concerned shall, on the order of the court, disclose to the judge alone in chambers the substance of the communication in question; and if the judge is satisfied that the communication should be received in evidence this shall be done in private in accordance with section 36(4) of the Constitution.