Minister for Home Affairs of the Commonwealth v Zentai

The Minister for Home Affairs of the Commonwealth appealed to the High Court of Australia against a decision of the Full Court of the Federal Court. The dispute concerned the extradition of Mr Charles Zentai to the Republic of Hungary. Hungary sought Mr Zentai's surrender for prosecution for an offence described as a "war crime," alleged to have occurred in 1944. However, the offence of "war crime" as defined under Hungarian law was not in existence at the time of the alleged acts, although murder was. The Minister had determined that Mr Zentai should be surrendered, a decision that was challenged by Mr Zentai.

The central legal issue before the High Court was the interpretation of Article 2.5(a) of the Treaty on Extradition between Australia and the Republic of Hungary. Specifically, the Court had to determine whether the "offence in relation to which extradition is sought" must have been an offence under the law of the requesting state (Hungary) at the time the alleged acts occurred, or if it was sufficient that the conduct constituted an offence under Hungarian law at the time of the extradition request. This question arose because the specific offence for which extradition was sought ("war crime") was created after the alleged conduct.

The High Court reasoned that Article 2.5(a) of the Treaty requires that the conduct constituting the offence for which extradition is sought must have been an offence in the requesting state at the time the acts or omissions occurred. The Court considered textual arguments from the Treaty, including provisions referring to "offences however described" and the purpose of the article concerning the determination of whether an offence is against the law of both contracting states. The Court concluded that the focus of Article 2.5(a) is on the conduct itself and whether it constituted an offence under the law of the requesting state at the time of the acts, irrespective of the specific legal classification of that offence at that time. The appeal was dismissed with costs.