When a foreign national is arrested at an airport in Turkey, the basic legal rule is clear: if the alleged offence is committed in Turkey, Turkish law applies. The person’s nationality does not remove Turkey’s criminal jurisdiction. Airports such as Istanbul Airport, Sabiha Gökçen Airport, Antalya Airport, Ankara Esenboğa Airport or any other Turkish border gate are located within the sovereign territory of the Republic of Turkey. Therefore, international terminals, passport control areas, transit zones, baggage claim halls and customs areas are not “law-free zones”.
The main rule on territorial jurisdiction is found in Article 8 of the Turkish Penal Code. Under this provision, Turkish laws apply to offences committed in Turkey. An offence is deemed to have been committed in Turkey if the act is committed wholly or partly in Turkey or if the result occurs in Turkey. The rule also covers Turkish land territory, airspace and territorial waters. For that reason, where a foreign passenger is suspected of drug trafficking, smuggling, forged travel documents, identity fraud, assault, threats, insult, money laundering, illegal cash transfer or another criminal act at a Turkish airport, Turkish prosecutors and Turkish criminal courts may exercise jurisdiction.
The most common airport-related offences involving foreign nationals include drug importation or transportation, customs smuggling, use of a forged passport or visa, travelling under another person’s identity, failure to declare goods subject to customs control, migrant smuggling, human trafficking, document forgery and resistance against public officers. Some of these offences are regulated under the Turkish Penal Code, while others are governed by special statutes such as the Anti-Smuggling Law, Customs Law, Passport Law and immigration legislation. The Anti-Smuggling Law No. 5607 contains specific provisions regarding the unlawful importation of goods and illegal entry into or exit from customs areas.
A frequent misconception concerns the “transit zone”. Some passengers believe that because they have not passed passport control, they have not legally entered Turkey and therefore cannot be prosecuted under Turkish law. This is incorrect. A transit zone may be an area used by international passengers, but it is still under Turkish sovereignty. If a criminal act is committed in the transit area of a Turkish airport, Turkish police, customs officers, prosecutors and courts may intervene. The absence of an entry stamp does not prevent a Turkish criminal investigation.
After a foreigner is arrested, the procedure is governed by the Turkish Criminal Procedure Code. The suspect must be informed of the accusation, the right to remain silent, the right to legal assistance, the right to present evidence and the right to have a relative notified. Article 147 of the Criminal Procedure Code requires that the suspect or accused be informed of the charge, the right to choose defence counsel and the right not to make a statement. Article 150 also provides for the appointment of defence counsel in certain circumstances, including where the suspect requests counsel and cannot appoint one, or where mandatory defence rules apply.
One of the most important safeguards for a foreign suspect is the right to an interpreter. If the suspect or defendant does not speak Turkish sufficiently, an interpreter must be appointed. Article 202 of the Turkish Criminal Procedure Code provides that where the accused or the victim cannot express themselves adequately in Turkish, the essential points concerning the accusation and defence must be translated through a court-appointed interpreter. This is not a mere formality; it is a core component of the right to defence and the right to a fair trial.
A foreign suspect arrested at an airport may be released, placed under police custody, referred to the public prosecutor, subjected to judicial control or brought before a criminal judgeship of peace with a request for detention. These measures are assessed under Turkish criminal procedure rules. In practice, courts may consider the seriousness of the offence, the expected sentence, the risk of flight, the risk of tampering with evidence, whether the person has a fixed address in Turkey and whether the person is likely to leave the country. Under Article 91 of the Criminal Procedure Code, the general custody period cannot exceed twenty-four hours from the moment of arrest, excluding the compulsory transfer period to the nearest judge or court, which cannot exceed twelve hours.
Foreign nationals may also have a right to consular communication. Article 36 of the Vienna Convention on Consular Relations provides that, upon request, the competent authorities must inform the consular post of the sending state if a national of that state is arrested, detained or committed to custody. The authorities must also inform the detained person of this right without delay. This does not mean that the consulate becomes the defence lawyer or controls the criminal case; however, consular access can be important for family contact, identity documents, translation issues and arranging legal representation.
Criminal prosecution and deportation are separate legal processes. A foreigner arrested at a Turkish airport is not automatically “only deported” without criminal proceedings. If there is a criminal suspicion, a criminal investigation may be conducted first. The person may be indicted, tried, released under judicial control or detained pending trial. Deportation may then be considered separately by administrative authorities. Article 59 of the Turkish Penal Code provides that where a foreigner is sentenced to imprisonment, their situation is reported to the Ministry of Interior for deportation assessment after supervised release, conditional release or completion of sentence.
Deportation proceedings are mainly governed by the Law on Foreigners and International Protection No. 6458. According to the Presidency of Migration Management, deportation is regulated under Articles 52 to 60 of that law, and deportation decisions are issued by governorates. Grounds may include threats to public order or public security, use of forged documents, violation of legal entry or exit rules and cases falling within Article 59 of the Turkish Penal Code.
However, deportation is not unlimited. Turkish immigration law contains safeguards against removal where the person may face death penalty, torture, inhuman or degrading treatment in the destination country. Serious health conditions, pregnancy, human trafficking victim status and certain forms of violence-related victimisation must also be assessed. A deportation decision may be challenged before an administrative court within seven days of notification, and unless the foreigner consents, deportation is generally not enforced during the lawsuit period or while judicial review is pending.
If the alleged conduct occurred on board an aircraft, aviation law and international conventions may also become relevant. Turkey is a party to the Tokyo Convention framework concerning offences and certain acts committed on board aircraft. As a general principle, the state of registration of the aircraft may have jurisdiction over offences committed on board, but Turkish jurisdiction may also arise if the aircraft lands in Turkey, the consequences occur in Turkey, or Turkish public order and security are affected.
In conclusion, foreigners arrested at airports in Turkey are generally prosecuted under Turkish criminal law and Turkish criminal procedure law. Depending on the nature of the case, the Turkish Penal Code, Anti-Smuggling Law, Customs Law, Passport Law, Law on Foreigners and International Protection and relevant international conventions may apply together. Being a foreign national does not create immunity from prosecution. At the same time, it may trigger specific procedural rights: interpreter assistance, defence counsel, consular communication, fair trial guarantees, the right to challenge deportation and protection against removal to a country where the person may face serious harm. For this reason, airport arrest cases require immediate legal analysis of the search, seizure, statement-taking, translation, custody, detention and deportation aspects of the file.
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