Pre-Trial Detention and Judicial Control in Turkey: Conditions, Time Limits, Objection and Compensation

Pre-trial detention restricts a person's liberty before any verdict, and the Criminal Procedure Code (CMK) treats it as an exception. In practice, however, unreasoned detention orders, late detention reviews and failure to discuss whether judicial control would suffice are common problems. For a suspect's family, knowing the right steps in the first hours often decides the outcome.

This guide covers the legal conditions for detention, the grounds for it, the alternative of judicial control, the maximum detention periods, how to object and apply for release, and the compensation action available where detention is unlawful or exceeds the statutory limits.

1. The Legal Conditions for Detention (CMK Art. 100)

Two conditions must be met together (Art. 100/1): concrete evidence showing strong suspicion of an offence and a ground for detention. In addition, detention may not be ordered where it would be disproportionate to the importance of the matter and the penalty or security measure expected.

The statutory grounds (Art. 100/2) are:

• Risk of flight: concrete facts that the suspect or defendant has fled, is hiding, or raises a suspicion of fleeing.
• Risk of tampering with evidence: conduct giving rise to strong suspicion of destroying, concealing or altering evidence.
• Pressure on witnesses, victims or others.

For the catalogue offences listed in Art. 100/3 (for example intentional killing, aggravated injury, sexual assault, theft and robbery, drug manufacture and trafficking, organisation offences), a ground for detention may be presumed where there is strong suspicion based on concrete evidence. "May be presumed" does not mean automatic detention: the court still has to reason why detention is necessary and proportionate on the facts.

2. Judicial Control: The Alternative to Detention (CMK Art. 109)

Even where grounds for detention exist, judicial control is ordered instead if the same purpose can be achieved by it. The available measures include:

• A ban on leaving the country (surrender of passport and ID),
• A ban on going to, or an obligation to stay in, certain places,
• Reporting to the police station at set intervals,
• Not approaching the victim or witnesses,
• Providing personal or financial security,
• Electronic monitoring.

A suspect or defendant who deliberately fails to comply with judicial control obligations may be detained immediately, regardless of the length of the sentence that could be imposed (Art. 112). Complying strictly with reporting, travel bans and other obligations is therefore vital.

3. Police Custody and Appearing Before a Judge

The detention process usually begins with police custody. As a rule custody may not exceed 24 hours, excluding the time necessary to take the person to the nearest judge or court; for offences committed collectively, where evidence is difficult to collect, it may be extended by one day at a time, up to a total of four days. In custody the person has the right to legal counsel, the right to remain silent, and the right to have relatives notified; access to a lawyer before the police statement is taken is especially important for the defence.

A suspect brought before the criminal judgeship of peace is heard on the detention request. The judge decides between detention, judicial control and release.

4. Maximum Detention Periods (CMK Art. 102)

Detention is not unlimited. Under Article 102:

• In cases outside the jurisdiction of the heavy penal court, detention may last at most one year, extendable by six months in cases of necessity with reasons given.
• In cases within the jurisdiction of the heavy penal court, at most two years, extendable in cases of necessity; the extension may not exceed three years in total, or five years for certain listed offences (for example offences against state security and offences under the Anti-Terror Law).
• During the investigation stage, detention may not exceed six months in cases outside the heavy penal court's jurisdiction and one year in heavy penal cases; for certain offences and offences committed collectively the period is one year and six months, extendable by six months.
• For children who had not turned fifteen at the time of the offence the periods are halved; for those under eighteen they are reduced to three quarters.

Extension decisions are taken after hearing the public prosecutor, the suspect or defendant and defence counsel. A person released under judicial control after the maximum period has expired may be detained again for breach of those obligations, but the new detention may not exceed nine months in heavy penal cases and two months in others (Art. 112/2).

5. Objecting to Detention and Applying for Release

Detention orders, orders continuing detention and refusals of release can be challenged by objection, within 7 days of learning of the decision (CMK Art. 268). The objection petition is submitted to the judgeship that gave the decision and is examined by the next criminal judgeship of peace.

• A request for release can be made at any time and is not tied to the objection period; it should be supported by new evidence or changed circumstances (address, employment, family ties, health).
• In the investigation stage, continued detention is reviewed by the judgeship of peace at intervals of no more than 30 days; at trial the court reviews it at every hearing and at intervals of no more than thirty days. Late reviews are unlawful.
• Failure to identify concrete facts, an unreasoned order and failure to explain why judicial control is insufficient are the main grounds for objections and for an individual application to the Constitutional Court.

6. Unlawful or Over-Long Detention: Compensation for Protective Measures

Where protective measures (arrest, custody, detention) were unlawful or statutory limits were exceeded, material and non-material compensation can be claimed under CMK Art. 141. The main cases are:

• Arrest or detention outside the cases allowed by law,
• Not being brought before a judge within the custody or detention period,
• Being detained and then acquitted, or the prosecution being dropped,
• Being lawfully detained but not tried within a reasonable time.

The claim is made to the heavy penal court within three months of learning that the relevant decision has become final and in any case within one year of finality (Art. 142). In a 2026 decision the 12th Criminal Chamber of the Court of Cassation held that a claim that detention reviews exceeded the statutory time limits cannot be dismissed without obtaining the case file and examining it with detailed reasoning (see the precedent box below).

7. A Practical Checklist

• Ask for a lawyer in the first hour. Counsel and the right to silence are available before the police statement.
• Read the detention order's reasoning. Are strong suspicion and the ground for detention shown by concrete facts, and does the order explain why judicial control is insufficient?
• Track the seven-day objection period. It runs from learning of the decision.
• Support release requests with a new fact: proof of residence, an employment contract, a medical report, family circumstances.
• Record the dates of detention reviews. Reviews outside the statutory limits can be evidence in a later compensation claim.
• Comply strictly with judicial control. Missing a reporting day or breaching a travel ban can lead to detention.

Frequently Asked Questions

For legal advice on investigations, detention, judicial control and criminal trials, see our Criminal Law page, or request an appointment through our Contact page.