"Where a person, however unlawfully, is brought into the jurisdiction and is before a court in this State, that court has undoubted jurisdiction to deal with him or her. But it also has a discretion not to do so, where to exercise its discretion would involve an abuse of the court's process. Such an abuse may arise by reason of delay on the part of prosecuting authorities. But delay is only one variety of unfair or wrongful conduct on the part of those authorities. Other such conduct may exist, including wrongful and even unlawful involvement in bypassing the regular machinery for extradition and participating in unauthorised and unlawful removal of criminal suspects from one jurisdiction to another. It still remains to be determined whether the conceptual basis of the relief referred to in R v Hartley[9]; R v Bow Street Magistrates; Ex parte Mackeson[10]; Herron[11] and other such cases is to prevent prosecuting authorities from taking or securing advantage from their own misconduct or that of their servants or agents or is to assert the entitlement of the courts to protect the integrity of their own process and to uphold that integrity and the perception of it in the eyes of the parties, of the community and of the judge themselves. The first view has, as its conceptual basis, a principle akin to estoppel. The second view is grounded more fundamentally in a conception of the necessary purity of the `temples of justice' and the undesirability that the administration of justice itself should become contaminated by involvement (or the perception of involvement) in unlawful or wrongful activities on the part of the authorities: cf Carver v Attorney-General for New South Wales (Court of Appeal, 2 July 1987, unreported). Most of the case law appears to be expressed in terms of the former justification. For my own part, I incline towards a preference for the latter. Perhaps the two concepts are simply dual aspects of the one consideration. However that may be, it is not necessary to resolve that controversy in this case."[12]