Cancellation of, and declarations regarding permits and certificates
14.—(1)  Where the holder of any permit seeks to enter Singapore accompanied by any child whose name is not endorsed upon that permit under section 12 and who is not otherwise entitled to enter Singapore under the provisions of this Act, the Controller may cancel the permit issued to that person.
(2)  Where, upon the arrival in Singapore of any person to whom a permit or certificate has been issued, the Controller is satisfied, as a result of inquiries made under section 24, 25 or 26, or from other information, that that permit or certificate was issued as a result of any false representation or concealment of a material fact the Controller may cancel the permit or certificate.
(3)  Where at any time, during the period of validity of any permit or certificate, the Controller is satisfied that the holder of the permit or certificate is a prohibited immigrant, the Controller shall cancel the permit or certificate.
(4)  Where any person has entered Singapore by virtue of a permit or certificate, and the Controller is satisfied —
(a)that any material statement made in or in connection with the application for the permit or certificate was false or misleading;
(b)that the person is a prohibited immigrant; or
(c)that the holder of the permit has contravened any condition stated in the permit,
the Controller may declare at any time after the date of the entry, that the presence of that person in Singapore is unlawful.
(5)  On making any cancellation under subsection (2) or (3) or on making any declaration under subsection (4) the Controller shall, by notification, which, if the address of the person is known, shall be sent to him at that address and otherwise shall be published in such manner as the Controller thinks fit, inform the person affected thereby of the grounds on which the cancellation or declaration has been made and that person may appeal against the cancellation or declaration, as the case may be, within such time and in such manner as may be prescribed, to the Minister, whose decision shall be final.