- 06-Nov-2025
- public international law
The principle of dual criminality requires that the act for which extradition is sought must constitute a crime in both the requesting and requested countries. This ensures fairness and prevents extradition for acts that are not offenses under the requested country’s laws. Several extradition cases have highlighted the application of this principle in international law.
The U.S. Supreme Court emphasized that extradition treaties require the offense to be punishable by law in both countries, reaffirming the dual criminality principle.
Though primarily a human rights case, it underscored the necessity of dual criminality and fair trial guarantees before extradition from the UK to the US.
The Supreme Court of Canada held that for extradition, the alleged offense must be a crime in Canada as well as in the requesting country.
Indian courts frequently apply dual criminality, for example in the extradition of fugitives accused of financial fraud or drug trafficking where the acts are crimes in both India and the requesting country.
Within the EU framework, the European Court of Justice has adjudicated multiple cases ensuring offenses meet dual criminality criteria or fall under a list of pre-agreed offenses.
The dual criminality principle is embedded in most extradition treaties worldwide.
It protects individuals from extradition for acts that are lawful in the requested country.
Courts play a crucial role in interpreting and applying this principle to specific cases.
Consider a case where Country X requests extradition of a suspect for cyber fraud.
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