A security risk certificate is part of a New Zealand legal process whereby a person suspected of being a security risk can be incarcerated prior to expulsion from the country. The security risk certificate is based on unchallengeable "classified security information". This is information that, in the opinion of the Director of the New Zealand Security Intelligence Service "cannot be divulged to the individual in question or to other persons" for various reasons, including those listed below. Reasons for non-disclosure Disclosure may, for example: "lead to the identification of, or provide details of, the source of the information, the nature, content, or scope of the information, or the nature or type of the assistance or operational methods available to the New Zealand Security Intelligence Service" be "about particular operations that have been undertaken, or are being or are proposed to be undertaken, in pursuance of any of the functions of the Service or of another intelligence and security agency" have "been provided to the New Zealand Security Intelligence Service by the government of any other country or by an agency of such a government, and is information that cannot be disclosed by the Service because the government or agency by which that information has been provided will not consent to the disclosure" "prejudice the security or defence of New Zealand or the international relations of the Government of New Zealand" or "prejudice the entrusting of information to the Government of New Zealand on a basis of confidence by the government of another country or any agency of such a government, or by any international organisation". Appeals To the Inspector-General of Intelligence and Security The sole avenue for appeal against a certificate is the Inspector-General of Intelligence and Security. It is the role of the Inspector-General to determine whether the certificate was properly issued. This is not, properly speaking, an appeal or rehearing. The Inspector-General has privileged access to classified security information, significant powers, and wide discretion as to how to use them (they are acting, however, in a quasi-judicial capacity). The position of the Inspector-General was created in conjunction with the 1996 amendment to the New Zealand Security Intelligence Service Act. The Inspector-General of Intelligence and Security, a retired High Court judge, is required to review the security risk certificate. Although the Immigration Act allows both the Inspector-General and the minister to consider information other than the classified information signified