The arrest and delivery of a fugitive wanted for a crime committed in another country, usually under the terms of a extradition treaty.
In Fong Yue, the United States Supreme Court defined the term as follows:
"Extradition is the surrender to another country of one accused of an offence against its laws, there to be tried, and, if found guilty, punished."
In R v Bow Street, Justice Browne-Wilkinson wrote:
"In general, a state only exercises criminal jurisdiction over offences which occur within its geographical boundaries. If a person who is alleged to have committed a crime in Spain is found in the United Kingdom, Spain can apply to the United Kingdom to extradite him to Spain."
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