Extradition and Rules relating to Extradition in International Law
Extradition and Rules Relating to Extradition in International Law
Key Takeaways
- Extradition is the formal surrender of an accused or convicted person by one State to another State for criminal prosecution or punishment. It is an important mechanism of international cooperation in criminal matters.
- Extradition is primarily governed by international treaties, domestic legislation and applicable international legal principles. There is no universal obligation requiring every State to extradite every fugitive criminal.
- The principle of double criminality generally requires that the conduct for which extradition is requested must constitute a criminal offence under the laws of both the requesting and requested States.
- The rule of speciality provides that an extradited person cannot ordinarily be prosecuted or punished for offences committed before extradition other than those permitted under the extradition arrangement, subject to recognised exceptions.
- Extradition may be refused on several grounds, including political offences, certain military offences, previous acquittal or conviction, discriminatory prosecution and serious human rights concerns.
- International human rights law places important restrictions on extradition. A State may be prevented from surrendering a person where there is a real risk of torture, inhuman treatment or other serious violations of protected rights.
- In India, extradition is governed by the Extradition Act, 1962, which establishes procedures for surrendering fugitive criminals, examining extradition requests and imposing legal restrictions on extradition.
What Is Extradition in International Law?
Extradition is the legal process through which one State formally surrenders an individual to another State for prosecution, trial or punishment in connection with a criminal offence.
It generally arises when a person accused or convicted of an offence in one country is found within the territory of another country.
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For example, if a person commits fraud in India and subsequently escapes to another country, India may request that country to surrender the person so that criminal proceedings can take place in India.
Two States are involved in the extradition process:
- Requesting State: The State seeking the surrender of the accused or convicted person. It must establish that the extradition request satisfies the applicable legal requirements.
- Requested State: The State in whose territory the person is located. It examines the extradition request and decides whether surrender is permissible under its laws and international obligations.
Extradition does not itself determine whether the accused person is guilty. It determines whether the legal requirements for transferring the person to another jurisdiction have been satisfied.
The purpose of extradition is to prevent individuals from escaping criminal responsibility merely by crossing international borders.
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What Is the Legal Basis of Extradition?
The legal basis of extradition comes from international agreements, domestic laws and established principles of international cooperation.
Although extradition involves relations between sovereign States, there is no single international treaty that governs every extradition request.
Bilateral Extradition Treaties
Bilateral extradition treaties are agreements between two countries establishing the conditions under which accused or convicted persons may be surrendered.
These treaties ordinarily specify the offences covered, the documents required, the procedure for submitting requests and the circumstances in which extradition can be refused.
The obligation to extradite arises according to the terms of the applicable treaty.
Multilateral Conventions
Certain international conventions establish cooperation mechanisms for particular categories of offences, such as terrorism, corruption, torture and organised crime.
These conventions may require States to establish jurisdiction, prosecute offenders or cooperate in extradition proceedings.
However, the extent of the obligation depends on the language of the relevant convention and the commitments accepted by the participating States.
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Domestic Extradition Laws
Every requested State must act according to its applicable domestic legal framework.
Domestic laws regulate the arrest and detention of fugitives, judicial examination of extradition requests, procedural safeguards and the final surrender of individuals.
In India, the principal legislation governing extradition is the Extradition Act, 1962.
Reciprocity and International Cooperation
Reciprocity means that one State cooperates with another with the understanding that similar cooperation may be extended in return.
Where no bilateral extradition treaty exists, surrender may sometimes be pursued through domestic legislation, reciprocal arrangements or applicable multilateral conventions.
Nevertheless, reciprocity alone does not automatically authorise extradition. A lawful basis under the requested State’s legal system remains necessary.
What Are the Rules Relating to Extradition in International Law?
Extradition is governed by several principles designed to balance international criminal cooperation with State sovereignty and individual rights.
These principles operate through treaties and domestic legislation. Their precise application may differ between countries.
Rule of Double Criminality
The principle of double criminality requires that the conduct forming the basis of an extradition request must generally constitute a criminal offence under the laws of both the requesting and requested States.
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The purpose is to prevent a State from surrendering an individual for conduct that its own legal system does not recognise as criminal.
For example, if an individual is accused of financial fraud, extradition may be possible where the conduct constitutes a criminal offence in both countries.
However, the two countries need not necessarily use identical names or classifications for the offence. What matters is whether the underlying conduct is criminal under both legal systems.
The United Nations Model Treaty on Extradition recognises this principle under Article 2. It also provides a framework for determining the seriousness of offences eligible for extradition.
Rule of Speciality
The rule of speciality provides that a person extradited for a particular offence cannot ordinarily be prosecuted, sentenced or detained for another offence committed before extradition without satisfying the applicable exceptions.
This principle prevents the requesting State from obtaining custody for one offence and subsequently using that custody to prosecute unrelated earlier offences.
For example, where a person is extradited specifically for fraud, prosecution for an unrelated earlier offence may require the consent of the surrendering State.
The rule generally recognises exceptions where:
- Consent is obtained: The State that granted extradition subsequently agrees to prosecution for an additional offence.
- The relevant treaty permits another charge: Certain lesser offences arising from the same facts may be covered, depending on the governing law.
- The person has an opportunity to leave: The restriction may cease to apply where the individual remains in the requesting State after having a legally recognised opportunity to depart.
Article 14 of the UN Model Treaty on Extradition incorporates the rule of speciality.
In India, Section 21 of the Extradition Act, 1962 expressly recognises this principle.
Rule of Non-Extradition for Political Offences
Under the political offence exception, extradition may be refused where the offence is considered political in nature.
The principle developed to prevent extradition from being used as an instrument of political persecution.
Political offences are generally discussed under two broad categories:
- Pure political offences: These are directed primarily against the political organisation or security of a State, such as certain forms of treason or sedition.
- Relative political offences: These involve ordinary criminal conduct connected with a political objective or political disturbance.
Whether an offence qualifies for protection depends on the relevant treaty, domestic law and surrounding circumstances.
The exception is not unlimited. Serious violent offences and crimes covered by particular international conventions may be excluded from its protection.
In India, Section 31 of the Extradition Act restricts surrender for offences of a political character. However, Section 31(2), read with the Schedule, excludes specified offences from being treated as political offences for this purpose.
Rule Relating to Military Offences
Extradition is generally excluded for offences that arise exclusively under military law and do not constitute offences under ordinary criminal law.
For example, certain disciplinary violations applicable only to members of the armed forces may not justify extradition.
However, conduct such as murder or theft does not become exempt from extradition merely because the accused person is a member of the armed forces.
The distinction depends on the nature of the offence rather than the professional status of the accused.
Article 3 of the UN Model Treaty treats exclusively military offences as a ground for refusing extradition.
Rule Against Double Jeopardy
The principle of non bis in idem means that an individual should not ordinarily face repeated prosecution or punishment for the same offence after a final legal determination.
In extradition proceedings, this principle may prevent surrender where the requested State has already delivered a final judgment concerning the same offence.
For example, where a competent court has finally acquitted a person of an offence, a subsequent extradition request involving the same offence may be refused under the applicable treaty.
The precise scope of this protection varies. Some treaties recognise only final decisions in the requested State, while others provide wider protection.
Article 3(d) of the UN Model Treaty recognises a final judgment in the requested State as a mandatory ground for refusal under its proposed framework.
Rule Relating to Extradition of Nationals
A State may refuse to extradite its own nationals if its domestic law or an applicable treaty permits or requires such refusal.
Some countries prohibit the extradition of citizens, while others allow extradition subject to particular conditions.
Consequently, there is no universal rule that nationals must always be extradited or must always be protected from extradition.
Where extradition is refused because of nationality, international agreements may provide for the matter to be submitted to domestic prosecuting authorities.
Article 4 of the UN Model Treaty recognises nationality as an optional ground for refusing extradition.
Rule Relating to Seriousness of the Offence
Extradition arrangements commonly require the alleged offence to meet a minimum punishment threshold.
This requirement prevents extradition procedures from being used for comparatively minor violations.
The UN Model Treaty contains alternative minimum imprisonment thresholds for States to consider when negotiating extradition agreements.
The applicable threshold must therefore be determined from the relevant treaty or domestic statute rather than assuming that one standard applies internationally.
Rule Against Extradition Where Prosecution Is Time-Barred
Extradition may be refused where prosecution or enforcement of punishment is barred by the applicable law of limitation.
The purpose is to ensure that extradition does not revive criminal liability contrary to the governing legal framework.
Different treaties determine differently whether limitation periods under the requesting State, requested State or both must be considered.
Under Section 31(1)(b) of India’s Extradition Act, surrender is prohibited where prosecution is barred by time under the law of the requesting State.
Rule of Protection Against Human Rights Violations
Human rights considerations are an important limitation on extradition.
A requested State may be prohibited from surrendering an individual where substantial grounds establish a real risk of torture or other treatment contrary to binding human rights obligations.
Relevant considerations include:
- Torture or inhuman treatment: Extradition may be impermissible where surrender would expose the individual to a serious risk of prohibited treatment. The principle of non-refoulement, particularly the prohibition of return to a risk of torture, is relevant to such decisions.
- Unfair criminal proceedings: Serious deficiencies in trial safeguards may justify refusal under applicable human rights law.
- Discriminatory prosecution: Extradition may be refused where the request is intended to punish an individual because of religion, nationality, political opinion or another protected characteristic.
- Death penalty: Some States refuse extradition for capital offences unless adequate assurances concerning the death penalty are provided.
The human rights safeguards applicable to individuals do not operate identically in every jurisdiction. Their legal effect depends on the applicable treaties, national law and international obligations.
What Is the Principle of Aut Dedere Aut Judicare?
Aut dedere aut judicare is a Latin expression commonly translated as “extradite or prosecute”.
The principle refers to obligations found in certain international conventions requiring a State to submit a case to its competent prosecuting authorities or, where permitted, extradite the alleged offender.
Its purpose is to reduce the possibility that individuals accused of serious international offences escape legal proceedings.
An important example is Article 7 of the United Nations Convention Against Torture, 1984.
The principle does not create an identical universal obligation for every criminal offence. Its application depends on the particular international legal instrument.
In Questions Relating to the Obligation to Prosecute or Extradite (Belgium v. Senegal) (2012), the International Court of Justice examined Senegal’s obligations under the Convention Against Torture.
The Court held that Senegal was required to submit the case concerning former Chadian President Hissène Habré to its competent authorities for prosecution if it did not extradite him.
How Does the Extradition Process Work?
The extradition process generally involves a formal request, examination by the requested State and a final decision on surrender.
Although procedures differ between countries, the main stages are as follows.
Submission of the Extradition Request
The requesting State submits an extradition request through the prescribed diplomatic or official channels.
The request ordinarily contains identification details, particulars of the alleged offence, relevant legal provisions, an arrest warrant or conviction record, and supporting evidence.
Arrest and Judicial Examination
Where legally authorised, the requested State may arrest the person pending examination of the extradition request.
The competent judicial authority examines whether the legal requirements have been satisfied, including identity, extraditable offences, evidentiary requirements and applicable grounds for refusal.
Decision on Extradition
After the prescribed examination, the competent authority determines whether extradition should be granted.
Depending on domestic law, the final decision may involve both judicial and executive authorities.
Surrender of the Individual
Once extradition is approved and the necessary legal procedures are completed, arrangements are made to transfer the person to the requesting State.
The requesting State must comply with the conditions attached to surrender, including applicable assurances and the rule of speciality.
Extradition Law in India
India’s extradition framework is primarily governed by the Extradition Act, 1962, which came into force on 5 January 1963.
The Act regulates the surrender of fugitive criminals from India and the return of accused or convicted persons to India from foreign States.
Important provisions include:
| Provision | Subject |
| Section 2 | Definitions of extradition offence, treaty and fugitive criminal |
| Section 3 | Application of the Act to foreign States |
| Sections 4–8 | Requisition, magisterial inquiry and surrender |
| Section 21 | Restrictions on trying extradited persons for other offences |
| Section 24 | Discharge where surrender is delayed beyond the prescribed period |
| Section 31 | Restrictions on surrender |
| Section 34C | Life imprisonment instead of the death penalty in specified extradition cases |
Under Sections 5–8, a magistrate may examine the evidence and determine whether a prima facie case supports extradition. If the necessary requirements are satisfied, the matter is reported to the Central Government, which decides whether surrender should proceed.
The Ministry of External Affairs is India’s central authority for extradition matters, with its Consular, Passport and Visa Division handling the relevant processes.
Important Cases Relating to Extradition
Daya Singh Lahoria v. Union of India (2001)
In Daya Singh Lahoria v. Union of India, (2001) 4 SCC 516, the Supreme Court examined whether a person extradited from the United States could be tried in India for offences outside the scope of the extradition order.
The Court recognised the doctrine of speciality and interpreted Section 21 of the Extradition Act.
It held that prosecution must remain within the limits permitted by the extradition arrangement and statutory exceptions.
Legal significance: The judgment established the importance of the rule of speciality in Indian extradition law.
Soering v. United Kingdom (1989)
In Soering v. United Kingdom, the European Court of Human Rights examined the proposed extradition of a person to the United States, where he faced capital murder charges.
The Court found that extradition, in the particular circumstances, would expose him to the death row phenomenon and violate Article 3 of the European Convention on Human Rights.
Legal significance: The judgment demonstrated that extradition obligations must be considered alongside applicable human rights protections.
Abu Salem Abdul Kayyum Ansari v. State of Maharashtra (2022)
This case concerned the extradition of Abu Salem from Portugal to India and sovereign assurances given regarding punishment.
India had assured Portugal that Abu Salem would not face the death penalty or imprisonment exceeding 25 years.
The Supreme Court distinguished between the sentencing powers of Indian courts and the executive’s responsibility to honour international commitments.
The Court recognised that the Government of India was bound to fulfil the assurance concerning the maximum period of incarceration through lawful constitutional or statutory mechanisms.
Legal significance: The case demonstrates the importance of sovereign assurances, international commitments and the separation of judicial and executive powers in extradition matters.
Difference Between Extradition and Deportation
Extradition and deportation both involve transferring individuals across national borders, but their purposes and legal foundations differ.
| Basis | Extradition | Deportation |
| Purpose | Criminal prosecution or punishment | Enforcement of immigration laws |
| Legal basis | Extradition treaties, arrangements and legislation | Immigration and foreigners laws |
| Request | Generally initiated by another State | Generally initiated by the removing State |
| Criminal charge | Connected with an extraditable offence | Not necessarily required |
| Safeguards | Subject to extradition-specific conditions | Subject to applicable immigration and human rights safeguards |
Extradition should also be distinguished from the transfer of sentenced persons, which generally concerns arrangements for serving an existing sentence in another country.
Conclusion
Extradition is an important institution of international law that enables States to cooperate in prosecuting offenders who cross national borders.
The rules relating to extradition, particularly double criminality, speciality, political offences, non-extradition of nationals and human rights protections, establish essential limits on the surrender of individuals.
India’s Extradition Act, 1962 provides the principal statutory framework for implementing extradition arrangements. Together, international agreements, domestic legislation and judicial decisions ensure that extradition operates as a mechanism of criminal cooperation while respecting legal safeguards, individual rights and State sovereignty.
Note: This article was originally written by Ramanjot Singh (Kurukshetra University, Kurukshetra) and published on 07 June 2021. It was subsequently updated by the LawBhoomi team on 06 October 2026.
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