Extradition from Turkey: How the Procedure Works and What an Extradition Lawyer Does

If someone is detained at an Istanbul airport or a family member receives news of an extradition hearing in Antalya, the immediate questions are which Turkish authority has the file, what kind of detention order exists, and whether the full request has arrived. This guide follows those decisions in order under Law No. 6706, rather than assuming that an international alert automatically authorises removal.

Which rules apply to a request from abroad?

The governing statute is the Cezaî Konularda Uluslararası Adlî İş Birliği Kanunu, Law No. 6706 on International Judicial Cooperation in Criminal Matters, effective from 5 May 2016. Articles 10–21 address extradition from Türkiye; Article 22 addresses Türkiye asking another country for extradition. Article 1 preserves international treaties, and the Code of Criminal Procedure No. 5271 supplies rules where the special legislation does not provide them. Do not use the old extradition rule formerly found in Article 18 of the Turkish Penal Code as though it were the current procedure.

Türkiye has ratified the 1957 Convention and all four listed additional protocols; that does not establish that each protocol binds every requesting state. The Ministry of Justice's 2025 country profile says extradition requests are sent through diplomatic channels in light of Türkiye's reservation under the Second Additional Protocol; urgent electronic transmission can be accepted with subsequent submission of originals or authenticated copies. Requests are expected in Turkish, although Council of Europe languages may also be accepted. The requesting country and treaty declarations must therefore be identified before applying a generic checklist.

Türkiye’s treaty reservations matter in practice. It has not accepted Chapter I of the 1975 Additional Protocol (ETS 086). Under the Second Additional Protocol (ETS 098), it reserves the right to use diplomatic channels for extradition requests. Under the Third Additional Protocol (CETS 209), the Article 12 documents remain required in simplified proceedings, and Türkiye has declared that consent to simplified extradition and waiver of speciality may be revoked. Under the Fourth Additional Protocol (CETS 212), Türkiye reserves the right not to accept a request barred by limitation under Turkish law. These rules do not apply identically in every state-to-state relationship; check the treaty, reservation and declaration actually in force with the requesting state.

Türkiye is not an EU member and does not execute European Arrest Warrants as an EU executing state. A request from an EU country to Türkiye is an extradition request governed by the relevant treaty and Turkish law, not automatic surrender under the EU warrant system. Nor should the existence of the Council of Europe Convention be confused with membership of the EU.

Who can be extradited and for which offence?

Article 10 concerns a foreign national sought for a criminal investigation or prosecution concerning an offence committed abroad, or for execution of a foreign criminal sentence. The conduct must meet the statutory dual-criminality and penalty thresholds. For investigation or prosecution, the offence must carry a maximum of at least one year of imprisonment under both the requesting state's and Turkish law. For enforcement of a final judgment, the imprisonment sentence actually imposed must be at least four months. Where several offences are included, Article 10(2) permits qualifying offences to be joined with some offences falling below those thresholds.

This is not a Turkish criminal trial on guilt. Defence counsel nevertheless needs the foreign warrant, the description of the acts, dates, provisions and conviction status to establish which legal test the court will apply. The precise alleged acts matter more than the label given to the offence abroad. If several countries request the same person, Article 10(3) makes the Central Authority choose which request receives priority, considering seriousness, place of commission, sequence of requests, nationality and the likelihood of onward extradition. No country wins automatically merely by applying first.

Turkish nationality changes the analysis. Article 11(1)(a) of Law No. 6706 generally bars extradition of Turkish citizens, subject to its wording concerning obligations under the Statute of the International Criminal Court. For dual nationals, check Turkish citizenship records and the legally relevant date; a second nationality does not automatically remove the protection.

Who makes which decision in Türkiye?

The Adalet Bakanlığı (Ministry of Justice) is the Merkezî Makam, or Central Authority, under Articles 2 and 3. Its Directorate General for Foreign Relations and EU Affairs handles international judicial-cooperation administration. Under Article 13 the Ministry screens the request, can seek supplementary papers and may reject a request that does not meet the relevant requirements. If it proceeds, it sends the dossier to the competent Cumhuriyet başsavcılığı (chief public prosecutor's office).

The prosecutor then seeks an admissibility decision from the ağır ceza mahkemesi. Article 15 locates jurisdiction in the high criminal court where the person is found; Ankara is the statutory fallback if the person's whereabouts are unknown. The brief label “high criminal court plus Ministry” therefore needs one important correction: neither body alone makes every decision, and the sulh ceza hâkimi (criminal judge of peace) has a separate initial function in provisional arrest.

In an ordinary contested case, the high criminal court assesses legal admissibility. A final positive decision does not itself mean the person is already authorised for delivery at the airport. Article 19, as updated under the presidential system, requires the views of the Foreign and Interior Ministries, a proposal from the Minister of Justice, and approval by the President for execution. Older reproductions of the original 2016 law say “Prime Minister”; this is obsolete. The Central Authority notifies the requesting state and the person of the decision. A ruling of inadmissibility and an executive decision not to surrender must not be conflated. If detention continues, the current custody order and any missed review dates must be examined separately from the question of extraditability; the applicable filing route and deadlines depend on the actual order and procedural stage.

Can police hold someone on a Red Notice?

INTERPOL describes a Red Notice as an international request to locate and provisionally arrest a wanted person, not an international arrest warrant. Turkish measures require their own legal basis. Under Article 14(1) of Law No. 6706, provisional arrest before the formal extradition request normally requires a foreign state's application, a sufficient suspicion of an extraditable offence and the Central Authority's approval, within the applicable treaty or reciprocity framework. Read together, these requirements mean that a Red Notice alone is not a substitute for the foreign-state application and Central Authority approval required by the ordinary route. Article 14(2) contains a narrow statutory situation linked to Article 12(3)(a) of the Turkish Penal Code in which a foreign state's request is not required; it should not be turned into a general Red Notice exception.

After apprehension under the provisional-arrest route, Article 14(3) requires production before the sulh ceza hâkimi within 24 hours for a detention decision. That judge must explain the possibility and consequences of consent-based extradition. Counsel should obtain the written arrest order, record the arrest time, check whether the Ministry approved the request, and ask for an interpreter where needed. An interview with the police is not a substitute for the required judicial decision.

What are the actual detention clocks?

It is important to separate provisional arrest before receipt of the completed request from detention during the subsequent extradition proceedings. Under Article 14(4), the applicable treaty determines provisional detention. For the 1957 Convention, Article 16(4) provides an 18-day checkpoint and an outer 40-day period; Türkiye's 2025 national procedure statement says an express request is needed to extend beyond 18 days. When no treaty governs and reciprocity is used, Law No. 6706 sets a maximum of 40 days of provisional custody. These are not assurances that release will occur on day 18 or that every case allows 40 days as of right.

If formal papers do not arrive within the applicable period, Article 14(6) requires lifting provisional detention or its alternative judicial control. This does not bar a new protective measure after a proper extradition request arrives. Under Article 14(5), judicial control under Article 109 of the Criminal Procedure Code may be imposed instead of provisional custody. The restrictions must be assessed against the actual order; “bail” is a convenient English shorthand, not a promise that payment of money alone secures release.

Once the request is being judicially processed, Article 16 allows protective measures under criminal procedure law. The high criminal court must review any continuing detention at intervals of no more than 30 days until surrender. Total detention must not exceed the term of imprisonment the person could receive or has been sentenced to serve for the extradition offence, under Article 16(4). If no Article 19 executive decision follows within one year of the judicial admissibility decision becoming final, Article 16(3) requires the protective measures to be lifted. That year is not a one-year maximum for completing every extradition case, and it does not run from the original airport arrest. If detention continues, the current custody order and any missed review dates must be examined separately from the question of extraditability; the applicable filing route and deadlines depend on the actual order and procedural stage.

How does the case move from arrest to handover?

Article 18 permits the high criminal court to seek additional foreign information and documents if those supplied are insufficient. Participation by a private third party as an intervening complainant is not permitted in the extradition proceeding. For the contested ordinary decision, Article 18(4) provides appeal to Yargıtay; the law gives that appellate court three months to dispose of the appeal, not a three-month deadline for the defendant to file it. The defendant's actual filing period and service date must be checked in the decision and current procedural law; do not infer them from this three-month provision.

Should the person consent to a simplified procedure?

Article 17 creates a separate rızaya dayalı iade route when the person consents. The high criminal court must explain procedural rights and the nature and legal consequences of consent, then still decide whether the request is legally acceptable. Its decision is subject to an itiraz (objection) route, not the ordinary Article 18 cassation arrangement. Once final, the dossier goes to the Central Authority; execution of this consent-based route requires the Central Authority's approval under Article 17(4), rather than the ordinary Article 19 path.

Consent to this accelerated process must also be separated from renunciation of the rule of speciality, the rule ordinarily limiting prosecution after extradition to the offences covered by the surrender decision (Article 10(4)). Where the Third Additional Protocol applies, Türkiye's treaty declarations address an express speciality waiver and possible revocation. Neither consent nor waiver should be presumed solely because a person wants to leave detention. Before recording a decision, counsel should obtain a reliable translation and explain the particular treaty and consequences; the court is not merely witnessing a signature.

What happens after permission to extradite?

The Central Authority coordinates delivery with the relevant ministries and foreign authorities under Article 20. If the receiving state does not collect the person on the agreed date without a justified reason, the court-imposed protective measures fall away after 30 days measured from that agreed date. Delivery can be postponed where another Turkish prosecution, proceeding or executable prison sentence exists, or where the person cannot travel. These are decisions to be documented by the competent authority, not automatic extensions of provisional arrest.

Law No. 6706 also permits transfer of certain evidential or crime-derived property, while preserving claims of good-faith third parties (Article 20(4)–(6)). Transit through Türkiye is a distinct request under Article 21, which the Central Authority assesses. If transit exceeds 24 hours and restricted liberty becomes necessary, a criminal judge of peace may order temporary detention for no more than seven days. Someone merely passing through is therefore not necessarily the subject of an ordinary Article 18 case in Türkiye.

Finally, Article 12 keeps extradition and administrative deportation separate: removal during an extradition process, or removal to a state whose extradition request was refused, requires the Central Authority's opinion. Immigration detention and challenges to deportation have their own legal basis and are not substitutes for high criminal court review. If the family is told the person is being “sent out,” ask for the actual decision, the responsible authority and the stated destination before characterising it as extradition.

What documents should the family or lawyer obtain?

• Person's full identity, all nationalities, passports, residence status and accurate contact details for counsel and family.
• Date, time and place of apprehension; detention facility if verified from the individual case; police and judicial file numbers.
• Provisional detention order, any judicial-control order, review decisions and the record of when each was served.
• Requesting state, foreign warrant or final judgment, charge dates, sentences, and any certified translations actually received.
• Evidence of medical needs, dependants and ability to comply with less restrictive measures, if custody is being considered.
• Copies of past Turkish rulings or pending Turkish cases, asylum or removal decisions, and any proof of mistaken identity.

As a hypothetical example, suppose a Georgian citizen is stopped at Istanbul Airport because another country circulates a Red Notice. The immediate lawyer's task is to verify the applicable foreign request and Ministry approval, secure the 24-hour judicial presentation and distinguish the provisional period from the later high criminal court case. If the full dossier arrives in time, the case moves into the Article 15 and 18 procedure; it does not end automatically simply because the provisional 40-day outside limit was reached. Local court arrangements in Istanbul and Ankara belong to their separate guides.

Where does an extradition lawyer intervene, and what happens if the decision is contested?

At the outset, Turkish criminal counsel checks the custody authority, requests interpretation, establishes the treaty relationship and obtains the Ministry/prosecution/court file. Before the admissibility hearing, counsel compares the foreign allegations with Article 10 thresholds, checks nationality and competing cases, examines formal documents, and places available evidence before the high criminal court. Throughout, counsel must track distinct detention-review dates independently of the merits hearing and ensure the client understands the consent route before any election is recorded.

After a contested Article 18 ruling, the ordinary legal route is an appeal to Yargıtay; the consent-based route has a separate objection mechanism. A distinct challenge to detention or a fundamental-rights issue may proceed to the Constitutional Court of Türkiye after applicable remedies have been used. Specific refusal grounds, filing deadlines, stays and international interim-measure questions are covered in How to Stop Extradition from Turkey; the general sequence is explained in the step-by-step extradition guide.

With an actual order in hand, the most useful first instruction is concrete: identify whether the person is in provisional arrest, the Article 18 hearing, executive review or an immigration procedure. Each has a different decision-maker and a different consequence if a deadline passes. The site's team can help coordinate cross-border defence with independent local counsel through the confidential enquiry form; this information is not individual legal advice.