Prosecutor Investigation in Turkey: What Foreigners Need to Know – 2026 Updated Guide

Under investigation by a Turkish prosecutor? Learn how criminal investigations work in Turkey, including suspect statements, lawyers, interpreters, detention, arrest, search and seizure, travel restrictions, evidence, prosecution and immigration risks for foreigners.

A prosecutor investigation in Turkey can be particularly difficult for a foreign national who is unfamiliar with the Turkish criminal justice system, does not speak Turkish or is concerned that the investigation may affect their ability to remain in or leave the country. Receiving a call from the police, learning that a criminal complaint has been filed, being summoned to a prosecutor’s office or discovering an investigation during a border or immigration check does not, however, mean that the person has been convicted—or even that a criminal case will necessarily be filed.

Under Criminal Procedure Code No. 5271 (Ceza Muhakemesi Kanunu – CMK), the investigation stage runs from the moment competent authorities learn of a suspected offence until an indictment is accepted by the criminal court. The Code defines a person under suspicion during this stage as a “suspect” (şüpheli); only after prosecution begins does the person acquire the procedural status of a defendant.

For foreigners, understanding this distinction is essential. A prosecutor’s investigation may ultimately result in an indictment, but it may also end without criminal prosecution where the applicable evidentiary and legal requirements are not satisfied.

What Is a Prosecutor Investigation in Turkey?

A criminal investigation is the preliminary stage during which the Turkish public prosecutor investigates whether an alleged criminal offence occurred and whether there is a sufficient legal and evidentiary basis to prosecute an identified person.

An investigation may begin after a complaint from an individual or company, a police report, information received by the prosecutor, an incident detected by law enforcement or another circumstance bringing a suspected offence to the authorities’ attention.

The prosecutor does not simply represent the complainant.

The prosecutor supervises the criminal investigation and evaluates the evidence collected before deciding how the file should proceed.

Who Is Considered a Suspect in Turkey?

Under Article 2 of the Criminal Procedure Code, a suspect is a person under suspicion of committing an offence during the investigation stage. The same provision defines investigation as the period from the competent authorities learning of a suspected offence until the acceptance of an indictment.

This terminology matters.

A foreign national who is described as a suspect has not been convicted.

Likewise, becoming a suspect does not mean that the prosecutor has already decided to file a criminal case.

The purpose of the investigation is precisely to determine whether further criminal proceedings are justified.

How Does a Prosecutor Investigation Start?

Investigations can begin in many ways.

A former business partner may file a fraud complaint. A spouse or partner may report assault or threats. A customer may allege commercial fraud. Police may discover suspected criminal conduct during an identity check. Customs authorities may refer an alleged smuggling offence to prosecutors. A traffic accident may also lead to a criminal investigation where injury or death occurs.

Foreign investors and company directors can additionally become involved in investigations concerning corporate conduct, customs offences, fraudulent documentation, breach of trust, bribery, tax-related allegations or workplace incidents.

The first task should always be to identify exactly what offence is being investigated and in what capacity the foreign national is involved.

Does a Criminal Complaint Automatically Mean Prosecution?

No.

A complaint can trigger an investigation, but it does not prove the allegation.

The prosecutor must evaluate the evidence.

The investigation may involve statements from the complainant and suspect, witness interviews, CCTV footage, medical reports, financial records, digital evidence, expert reports and other materials.

Only after examining the file does the prosecution process move toward a possible indictment.

This distinction is particularly important where criminal complaints arise from underlying commercial, employment, landlord-tenant or relationship disputes.

Can a Foreigner Be Summoned by the Prosecutor?

Yes.

A foreign national may be asked or summoned to provide a statement concerning an investigation.

The person should determine whether they are being called as a suspect, complainant, victim or witness.

These procedural roles should not be confused.

Before attending, it can be important to identify the investigation number, prosecutor’s office handling the file and alleged offence.

A foreigner should not assume that a prosecutor’s invitation is simply an informal meeting.

What Is the Difference Between a Police Statement and a Prosecutor Statement?

The Criminal Procedure Code defines an “expression/statement” (ifade alma) as questioning of a suspect about the alleged offence by law-enforcement officers or the public prosecutor. It separately defines “interrogation” (sorgu) as questioning by a judge or court.

This distinction becomes particularly important where the investigation develops toward protective measures requiring judicial involvement.

A statement given at the beginning of the investigation can also significantly affect later defense strategy.

Foreign suspects should therefore understand what is being alleged before providing detailed explanations.

Does a Foreigner Have the Right to a Lawyer?

Yes.

Foreign nationality does not remove the fundamental defense rights provided by Turkish criminal procedure.

The Criminal Procedure Code defines the defense counsel (müdafi) as the lawyer who conducts the defense of the suspect or defendant.

Depending on the nature of the offence and procedural circumstances, mandatory-defense rules may also become relevant.

For a foreign suspect, early legal representation can be especially important where there are language barriers, complicated evidence, detention risks or possible immigration consequences.

Should a Foreigner Speak to a Lawyer Before Giving a Statement?

In serious investigations, obtaining legal advice before providing a substantive statement can be highly important.

The initial statement may establish the defense position that prosecutors later compare against documents, witness testimony and digital evidence.

A rushed statement can therefore create contradictions that would otherwise have been avoidable.

The defense should ideally understand the allegation, identify immediately available exculpatory evidence and determine which factual issues require explanation before the suspect gives a detailed account.

Does a Foreigner Have the Right to an Interpreter?

Yes, where the foreign national cannot adequately express themselves in Turkish.

This is particularly significant in 2026 because Turkish judicial authorities continue to maintain annual interpreter lists under Article 202 of the Criminal Procedure Code. The Ankara Judicial Justice Commission’s 2026 announcement expressly confirms interpreter arrangements for victims, witnesses, suspects and defendants who cannot sufficiently communicate in Turkish during investigation and prosecution proceedings.

The applicable regulation similarly covers interpretation of statements made by victims, suspects, defendants and witnesses who do not sufficiently understand Turkish.

A foreign suspect should therefore not feel compelled to conduct a criminal defense in Turkish merely because they understand basic conversational Turkish.

What If the Interpreter Is Not Translating Correctly?

The problem should be raised immediately.

Criminal investigations frequently involve technical terminology that can be difficult even for fluent speakers.

Commercial contracts, financial transactions, medical terminology, technical processes and legal concepts can easily be mistranslated.

A suspect should ensure that the written statement accurately reflects what was actually said before signing it.

Where a misunderstanding occurs, it should be corrected in the procedural record.

Should a Foreigner Sign Documents Written Only in Turkish?

A foreign national should understand a document before signing it.

This is particularly important for a suspect statement.

Names, dates, transaction amounts and descriptions of alleged conduct should be checked carefully.

Signing a document without understanding its contents can make later attempts to explain mistranslation or misunderstanding considerably more complicated.

Does a Suspect Have to Answer Every Question?

A suspect has procedural defense rights, including protection against being compelled to make self-incriminating statements.

Whether to answer particular substantive questions should be evaluated according to the circumstances of the investigation.

Silence is not the same as refusing to provide basic identity information required by lawful procedures.

In complex cases, a lawyer may advise that a detailed substantive defense should be presented only after sufficient information concerning the allegation has been obtained.

Can a Prosecutor Order the Police to Collect Evidence?

The investigation process may involve law-enforcement authorities collecting evidence under the prosecutor’s supervision and within the framework of the Criminal Procedure Code.

Depending on the allegation, evidence may include CCTV recordings, witness statements, financial transactions, company records, communications, photographs, medical reports and expert examinations.

The defense should conduct its own evidence-preservation exercise at the same time.

Waiting for authorities to discover favorable evidence can be risky.

Can WhatsApp Messages Be Used in a Prosecutor Investigation?

Digital communications can become important evidence depending on how they were obtained and their relevance to the alleged offence.

WhatsApp messages, emails and other communications frequently arise in fraud, threat, harassment, commercial and relationship-related investigations.

A foreign suspect who possesses favorable messages should preserve them.

Deleting communications after learning of an investigation can destroy potentially important defense evidence.

Screenshots alone may also fail to show the complete context, so the original device and complete communication history can sometimes become important.

Can CCTV Footage Help a Foreign Suspect?

Yes.

CCTV evidence can sometimes establish where the person was, who initiated an incident or whether the complainant’s account is consistent with objective evidence.

However, many private CCTV systems automatically overwrite recordings.

A request to preserve potentially important footage may therefore need to be made quickly.

Hotels, apartment buildings, restaurants, shopping centers, workplaces and parking facilities can all possess relevant recordings depending on the case.

Can a Prosecutor Search a Foreigner’s Home?

Searches are regulated protective investigative measures and cannot be treated as unlimited merely because a person is under investigation.

Where authorities conduct a search, the suspect should avoid physical obstruction but should determine the legal basis for the measure and obtain the relevant procedural documentation.

A lawyer should be contacted promptly.

Any items or documents seized during the search should also be carefully recorded.

Can a Foreigner’s Phone or Computer Be Seized?

Potentially, where the statutory requirements for the relevant investigative measure are satisfied.

Electronic devices can be particularly important in cybercrime, fraud, commercial crime, harassment and document-related investigations.

The foreign national should determine precisely what property has been taken and preserve the relevant seizure documentation.

The legality and scope of digital evidence collection can subsequently become an important part of the defense.

Can Bank Accounts or Assets Be Frozen?

Certain criminal investigations can involve protective measures affecting assets, depending on the alleged offence and statutory requirements.

This is particularly relevant to foreign investors and company executives facing allegations involving fraud, money laundering, corruption or other financial crimes.

Asset measures can create immediate commercial consequences even before criminal responsibility has been determined.

Where a company account or personal asset is affected, the legal basis, scope and available challenge procedures should be examined promptly.

Can a Foreigner Be Detained During the Investigation?

Potentially.

However, becoming a suspect does not automatically mean detention.

Whether custody is legally available depends on the facts and applicable criminal-procedure requirements.

A foreign national who learns that authorities want to take a statement should determine whether there is merely a summons or whether an apprehension or custody measure has been issued.

This distinction can materially change the legal strategy.

Is Detention the Same as Pre-Trial Arrest?

No.

Police custody and judicial arrest pending criminal proceedings are distinct measures.

A suspect can be questioned and released without being arrested.

Pre-trial arrest requires judicial involvement and is governed by statutory conditions.

Foreign suspects should therefore avoid assuming that being taken to a police station necessarily means they will remain in custody until trial.

Can Judicial Control Be Imposed Instead of Arrest?

Depending on the circumstances, Turkish criminal procedure provides for judicial-control mechanisms.

The precise conditions and restrictions depend on the case.

For foreign nationals, one particularly important issue is whether any measure affects international travel.

A person released from custody should therefore understand whether they have simply been released or whether a continuing judicial-control obligation has been imposed.

Can a Foreigner Be Prevented from Leaving Turkey?

Potentially, where an applicable judicial measure restricts international travel.

However, the mere existence of a prosecutor investigation does not automatically mean that every suspect is prohibited from leaving Turkey.

A foreign national planning international travel should verify whether any judicial restriction exists.

This is especially important for tourists, expatriates and foreign executives who regularly travel outside Turkey.

What Happens If the Foreigner Is Already Outside Turkey?

An investigation can continue even if the person is abroad.

The practical consequences depend heavily on the alleged offence, procedural status and measures taken in the investigation.

A foreign national who learns of a Turkish criminal investigation while overseas should not simply ignore the matter.

The investigation should first be identified accurately through Turkish counsel before decisions are made concerning travel to Turkey or participation in procedural steps.

Can the Lawyer Review the Investigation File?

Access to investigation materials is an important defense issue, but the precise scope of access can depend on the procedural status of the file and whether legally authorized restrictions exist.

A lawyer should therefore determine what material can currently be reviewed rather than assuming that the entire investigation file will always be immediately available.

Where access is restricted, defense strategy may initially need to rely on the formal allegation, available procedural records and evidence independently held by the suspect.

What Is a Confidentiality or Restriction Order?

In some investigations, access to particular investigation materials can be legally restricted under the applicable criminal-procedure framework.

This does not mean that the suspect has been convicted or that the defense disappears.

It means that access to parts of the investigation material may be limited during a particular stage.

The scope and legal basis of the restriction should be examined rather than treating the entire investigation as permanently secret.

Can a Foreigner Submit Evidence to the Prosecutor?

Potentially, and doing so can be strategically important.

A suspect may possess evidence demonstrating that the allegation is false or incomplete.

Relevant materials can include contracts, invoices, bank statements, travel records, hotel reservations, CCTV footage, messages, emails, photographs and witness information.

However, evidence should generally be organized and submitted strategically.

Sending hundreds of pages without explaining their relevance may be less effective than a structured defense petition linking each document to the allegation.

Can Witnesses Be Identified During the Investigation?

Yes.

Where individuals witnessed the relevant events or possess material information, their identities can be brought to the attention of the investigating authorities.

Foreign suspects should identify witnesses early.

Witnesses may relocate, forget details or become difficult to contact.

Obtaining accurate names and contact information quickly can therefore be important.

What Happens If the Prosecutor Believes There Is Insufficient Evidence?

Where the legal requirements for prosecution are not satisfied, the investigation can end without a criminal trial through the applicable prosecutorial decision.

This is why the investigation stage can be critically important.

A well-supported defense presented before an indictment may prevent a foreign national from having to defend a full criminal trial.

The objective should therefore not always be simply to “save the defense for court.”

What Happens If the Prosecutor Files an Indictment?

An indictment does not itself constitute a conviction.

Once an indictment is accepted, the case moves from the investigation stage to the prosecution/trial stage. This distinction follows directly from the definitions in Article 2 of the Criminal Procedure Code.

At that point, the person is procedurally treated as a defendant rather than merely a suspect.

The criminal court then evaluates the accusation and evidence under the applicable trial procedures.

Can a Criminal Investigation Affect a Residence Permit?

Potentially, but a prosecutor investigation should not automatically be equated with cancellation of immigration status.

Criminal procedure and immigration law are distinct legal frameworks.

Nevertheless, certain criminal allegations or public-order considerations can create separate immigration-law issues depending on the circumstances.

Foreign nationals should therefore determine whether any immigration measure has actually been initiated rather than assuming that a criminal investigation automatically cancels their residence permit.

Can a Prosecutor Investigation Lead to Deportation?

Potentially in certain circumstances, but criminal investigation and deportation are separate procedures.

A prosecutor does not simply convert a criminal investigation into an automatic deportation order.

Where immigration authorities initiate separate administrative proceedings, the legal basis and available remedies should be examined independently.

For foreigners facing both criminal and immigration proceedings, coordination between the two defense strategies is essential.

What About Foreign Tourists?

Tourists can also become suspects in Turkish criminal investigations.

Common scenarios include traffic accidents, fights, allegations of assault, property damage, theft, harassment and disputes arising in hotels or entertainment venues.

A tourist’s planned departure date does not automatically terminate an investigation.

Before leaving Turkey, a tourist involved in a serious criminal investigation should determine whether any judicial restriction or pending procedural obligation affects travel.

What About Foreign Company Directors and Investors?

Corporate investigations can create additional complexity.

A foreign director may be named in a complaint merely because they hold a senior position in a Turkish company.

However, criminal responsibility must be analyzed individually.

The investigation should determine who actually participated in the alleged conduct, who made the relevant decision and what each individual knew.

Corporate title alone should not be treated as automatic proof of personal criminal responsibility.

What Should a Foreigner Do in the First 24 Hours?

The foreign national should identify the investigation authority, file number if available, alleged offence and procedural status. Relevant evidence should immediately be preserved. A Turkish criminal lawyer should review the situation before a detailed substantive statement is given where the allegation is serious. If the person does not sufficiently understand Turkish, an interpreter should be requested. Turkey’s 2026 judicial interpreter system expressly covers suspects and defendants during criminal investigation and prosecution.

The suspect should also avoid deleting messages, modifying documents, contacting witnesses improperly or confronting the complainant.

Frequently Asked Questions About Prosecutor Investigations in Turkey

1. Does being investigated by a Turkish prosecutor mean I will be charged?

No. The investigation determines whether the matter should proceed to criminal prosecution.

2. Am I considered a criminal defendant during the investigation?

Not yet. Under CMK Article 2, a person under suspicion during the investigation stage is a suspect. The procedural status of defendant applies after prosecution begins.

3. Can a foreigner have a lawyer during a prosecutor investigation?

Yes. Foreign suspects have defense rights under Turkish criminal procedure.

4. Can I request an interpreter if I do not speak Turkish?

Yes. Article 202 of the Criminal Procedure Code provides the framework for interpretation, and judicial commissions maintain interpreter lists for 2026.

5. Can I refuse to sign a statement I do not understand?

You should understand the contents and ensure the record accurately reflects your statement before signing procedural documents.

6. Does a prosecutor investigation automatically mean detention?

No. Investigation, questioning, detention and pre-trial arrest are distinct procedural concepts.

7. Can I leave Turkey while under investigation?

Potentially, provided no applicable judicial restriction prevents departure. The existence of an investigation alone should not automatically be treated as a travel ban.

8. Can my phone or computer become evidence?

Potentially, subject to the applicable criminal-procedure rules. Digital evidence frequently plays an important role in modern criminal investigations.

9. Can the investigation affect my Turkish residence permit?

Potentially in certain circumstances, but criminal and immigration proceedings are legally distinct. The immigration consequences require a separate case-specific assessment.

10. Can the prosecutor close the investigation without a criminal trial?

Yes. Not every investigation results in an indictment and criminal prosecution.

Criminal Defense for Foreigners Under Prosecutor Investigation in Turkey

For a foreign national, the earliest stage of a Turkish prosecutor investigation can be one of the most important periods for developing an effective defense. Evidence may still be available, CCTV footage may still exist, witnesses may be identifiable and inconsistencies in the allegation may be capable of being addressed before the matter develops into a criminal trial.

The first objective should be to determine the alleged offence, procedural status of the foreign national, evidence available in the investigation, existence of any search, seizure, detention or travel-related measure and whether separate immigration consequences are developing.

Fırat Fesih Kaya Law Office provides legal assistance to foreign nationals, tourists, expatriates, international investors, foreign employees and company executives involved in prosecutor investigations, police statements, criminal complaints, detention procedures, search and seizure measures, financial crime investigations and criminal proceedings in Turkey.

Legal assistance may also include coordination between criminal defense and immigration-law proceedings where a prosecutor investigation creates separate residence, deportation or entry-related concerns.

Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yıldırım Tower, Balgat, Çankaya / Ankara

A foreigner who learns that they are under investigation should not assume either that the matter is harmless or that prosecution is inevitable. Early identification of the accusation, preservation of favorable evidence, proper interpretation and a carefully prepared defense can materially affect how the investigation develops.