(2) A document is an exempt document if it contains information, the disclosure of which would be likely to prejudice the lawful activities of the security or intelligence services. (3) For the purposes of this Act, a certificate signed by the responsible Minister certifying that a document as described in a request would, if it existed, be one of a kind referred to in subsection (1) or (2), establishes conclusively that if such a document exists, it is an exempt document of that kind. International relations documents Documents affecting enforcement or administration of the law 28. A document is an exempt document if disclosure of the document under this Act would be contrary to the public interest, and the disclosure (a) would prejudice relations between the Government of Botswana and the Government of any other State; (b) would prejudice relations between the Government of Botswana and an international organisation of States or a body thereof; (c) would divulge any information or matter communicated in confidence by or on behalf of the Government of another State to the Government of Botswana; or (d) would divulge any information communicated in confidence by or on behalf of an international organisation of States or a body thereof to the Government of Botswana. 29. (1) A document is an exempt document if its disclosure under this Act would, or is likely to (a) prejudice the investigation of a breach or possible breach of the law or prejudice the enforcement or proper administration of the law in a particular instance; (b) prejudice the fair trial of a person or the impartial adjudication of a particular case; (c) disclose, or enable a person to ascertain, the identity of a confidential source of information in relation to the enforcement or administration of the law; 24