Arrest Warrant Conditions (Code of Criminal Procedure Articles 100–108) – Proportionality, Concrete Justification, and Judicial Control Alternatives in Practice

1) Introduction: Why is arrest the "exception," and freedom the "rule"?

In criminal proceedings, detention is one of the most severe temporary interferences with personal liberty. Article 19 of the Constitution and Article 5 of the ECHR establish detention as an exception subject to strict conditions. According to Article 100/1 of the Code of Criminal Procedure, detention can only be applied if there is concrete evidence demonstrating a strong suspicion of guilt and grounds for detention exist, and also provided that the principles of proportionality and necessity are met. Within this framework, the court must, in each specific case, reasonedly assess whether less stringent protective measures (primarily judicial supervision ) are sufficient.

The most common problem in practice is the reliance on "cliché" grounds for arrest (such as the likelihood of escape or the risk of tampering with evidence), neglecting to provide specific explanations tailored to the individual, the crime, and the evidence. However, both high court jurisprudence and the ECHR line individualized justifications based on concrete facts . Even the phrase "catalog crime" (Article 100/3 of the Code of Criminal Procedure) alone is not sufficient; in any case, a test of proportionality, alternative measures, and concrete justification must be conducted.

2) Legal Framework: Normative Foundations

• Article 19 of the Constitution: Personal liberty and security. No one shall be deprived of liberty except under conditions determined by law. Arrest, detention, and imprisonment require a judge's decision and justification.

• Article 5 of the ECHR: The right to liberty and security; the right to be tried or released within a “reasonable time” based on reasonable suspicion and legitimate aims; the right to challenge detention and to compensation

• CMK Articles 100–108: Grounds for arrest, catalog of offenses, judicial control, prohibition of arrest without questioning, reasonable/maximum duration of detention, release and appeal procedures, periodic review mechanisms.

3) Essential Prerequisite for Arrest: “Strong Suspicion of Crime”

3.1. The difference between “strong suspicion” and “simple suspicion”

Article 100/1 of the Code of Criminal Procedure (CMK) stipulates that arrest "concrete evidence demonstrating strong suspicion of guilt ." This represents a higher standard than the "simple suspicion" threshold in the initial stages of an investigation. Abstract reports or singular elements such as "suspect's statement/victim's testimony" should not be considered sufficient on their own; consistent, supporting evidence (camera footage, HTS analysis, forensic report, physical surveillance, consistency of witness statements, etc.) must be sought.

3.2. Quality and legality of evidence

The evidence on which an arrest warrant is based legally obtained . Illegally obtained evidence (Article 206/2-a; Article 217/2 of the Code of Criminal Procedure) alone cannot constitute strong suspicion. For example, in cases such as unlawful searches, exceeding the limits of an extended search/seizure, or coercive statements made without the presence of legal counsel, the exclusion of the evidence should be considered.

3.3. Timeliness and weight of the evidence

The court the evidencebased on the "current" situation. As the investigation progresses, that weaken (witness withdrawal, negative report, inconsistencies, etc.) necessitate a reassessment of the arrest status.

4) Reasons for Arrest: Risk of Escape and Tampering with Evidence (CMK Article 100/2)

4.1. Risk of escape

The mere fact that the maximum penalty is high automatically lead to the conclusion that "there is a risk of escape." Facts that substantiate the risk of escape are sought:

• The suspect's lack of a fixed residence, use of a fake identity, and attempts at deportation,

• Attempts or preparations for departure abroad, passport and visa transactions,

• Active behaviors aimed at escaping capture,

• Weak family/work ties, lack of settled life, etc.

4.2. Risk of tampering with evidence, exerting pressure on witnesses/victims

"Obstruction of evidence" is generally an abstract phrase. It is necessary to make it concrete

• Attempts to concretely influence witnesses (threat/encouragement messages, intermediaries),

• Actions aimed at deleting digital records, the possibility of tampering with places where evidence is stored,

• Continuing coordination traffic (HTS, messaging) with accomplices, etc.

4.3. Catalog of crimes (CMK Article 100/3) and the debate on "presumption"

In the crimes listed in Article 100/3 of the Code of Criminal Procedure (e.g., intentional homicide, aggravated sexual assault, child sexual abuse, drug manufacturing and trafficking, organized crime, crimes against state security and constitutional order, embezzlement, bribery, robbery, etc.), a warrant for arrest may be presumed. However, this a definitive presumption ; the specifics of the case, proportionality , and of alternative measures are still necessary. The court cannot rely solely on the "catalog"; : strong suspicion, concrete reason, and proportionality .

5) The Principles of Proportionality, Necessity, and Last Resort

5.1. Arrest is the “ultima ratio” to be resorted to only when less stringent measures are insufficient.

• Judicial supervision (Article 109 of the Code of Criminal Procedure) is considered first. Most risks can be managed through combinations such as travel ban, signature obligation, house arrest/house arrest, bail, electronic ankle monitor, and restrictions on approaching specific places/persons.

• The court must provide a fact-based answer to the question , "Why is judicial supervision insufficient?"

5.2. Proportionality: The weight of the measure relative to the potential penalty

A reasonable balance is sought between the expected punishment and the interference with liberty . In crimes with low penalties or those amenable to suspension/alternative sanctions, prolonged detention creates disproportion .

5.3. The requirement for written and reasoned examination of alternatives

The justification for "insufficient judicial supervision" cannot be dismissed with a mere abstract sentence. For example:

• “The suspect has a fixed residence and a regular job, no criminal record; evidence has largely been collected, and risks residence arrest + electronic monitoring + weekly signature .”
  This type of concrete, solution-oriented analysis is expected.

6) Requirement for Justification and Individualization

6.1. Prohibition of template justifications

"Stamped lists such as 'the nature and characteristics of the crime, the state of the evidence, the catalog of crimes...' are insufficient on their own. The reasoning the evidence in the case file, the suspect's personal and social situation, their behavior during the process, and the effectiveness of the measures taken ."

6.2. “Burden of concretization”

The prosecution and the court must support the risk of escape/destruction of evidence with factual evidence (message contents, witness statements, search and seizure records, HTS analyses, digital image records, evidence missing after the search, hidden materials, etc.).

6.3. "Timeliness" in arrest

The situation as of the decision date is taken as the basis. As evidence is collected, the risk of tampering with evidence decreases; this makes a transition to judicial supervision necessary. Periodic decisions regarding the continuation of detention should not be copy-pasted , but should include an up-to-date assessment each time .

7) Guarantees of Interrogation, Defense, and Procedural Rights

• Prohibition of arrest without questioning: Article 101 of the Code of Criminal Procedure; an arrest warrant cannot be issued without questioning before a judge. The right to legal counsel is fundamental.

• Review of the file and discussion of evidence: The defense counsel questions the grounds for strong suspicion and alternative precautionary measures; of adversarial proceedings also applies during the detention phase.

• Interpreter and reasonable accommodations: The suspect, who may have difficulty understanding, must be provided with an effective defense.

8) Detention Periods, Review, and Release

• reasonable time (ECHR Article 5/3) and maximum time (Criminal Procedure Code Article 102) are the two main benchmarks limiting the prolongation of detention.

• Periodic review: Decisions regarding the continuation of detention are subject to reassessment /alternative measures review in light of “recent developments”

• As evidence gathering progresses: The risk of tampering with evidence decreases; transition to forensic supervision may be necessary.

• A request for release can be made at any stage; new findings/reports/statements strengthen the justification.

Note: Details regarding maximum detention periods vary depending on the nature of the crime and the level of punishment; the current text of Article 102 of the Code of Criminal Procedure should be used as the basis for each specific case.

9) The Perspective of the European Court of Human Rights and the Constitutional Court

• ECHR (e.g., Letellier/France; Buzadji/Moldova; Fox, Campbell and Hartley/United Kingdom; Kalashnikov/Russia):

  • Initially, "reasonable suspicion" is required; as time passes, abstract justifications (the severity of the crime, its cataloged nature) lose their sufficiency; specific reasons must be demonstrated.

  • Exceeding the "reasonable time" constitutes a violation. The reasons why alternative measures would be ineffective should be discussed.

• Constitutional Court individual application guidelines:

  • Lack of compelling evidence for arrest , insufficient justification , disproportionate length of detention , and failure to discuss alternative judicial supervision are frequent reasons for violations.

  • "Copy-paste" justifications; "abstract evasion/concealment" phrases; and continuation decisions made without considering the individual's circumstances and the evidence may lead to violations.

10) Common Mistakes in Practice (Their Impact on Defense Strategy)

1. Confusing strong suspicion with simple suspicion: Relying on an arrest warrant/arrest request when there is no consistent evidence in the file.
   Defense: Create an evidence map; show the weight of each piece of evidence, its legality, and whether it supports each other in a table.

2. Treating cataloged offenses as automatically warranting arrest:
   Defense: that the "catalog" a presumptive opinion , not a definitive conclusion; and that combinations of judicial controls can manage the risks.

3. Failure to discuss alternative measures:
   Defense: a case-specific judicial control package (signature + house arrest + no leaving the residence + electronic monitoring + communication ban, etc.).

4. Abstract grounds for escape/concealment: Defense: Counter with concrete facts such as fixed residence, family/work ties, criminal record, confiscated passport, and high level of evidence gathering
   

5. Ignoring the current status of the proceedings:
   Defense: List all changes that have occurred since the last hearing (evidence collected, expert reports, witness testimonies).

11) “Arrest Checklist”

• Strong suspicion: Is there a consistent set of evidence? Is it legally admissible?

• Reason for arrest : What factors demonstrate the risk of escape/concealment ?

• Proportionality: The balance between potential penalties and measures, personal circumstances (health, dependents, permanent residence, work, education).

• Judicial supervision alternative: Why would it be sufficient? (Suggest a concrete package of measures.)

• Reasoning: Is the opposing side's reasoning formulaic? Is individualization lacking?

• Current status: Has the evidence been collected? Have the risks decreased?

• Duration: Reasonable/maximum duration tests; periodic review.

• ECHR/Constitutional Court approach: Add concrete justifications and arguments for the necessity of alternative measures.

• Special circumstances: Medical reports, pregnancy, best interests of the child, serious illness, disability, work-residence relationships, etc.

12) Judicial Control Instead of Arrest: Effective Combinations

Objective: To manage escape and blackout risks with minimal intervention.
Sample packages:

• Package A (Medium risk of escape, low risk of blackout):
  Conditional bail + weekly signature + surety/security deposit + notification of address change.

• Package B (Medium risk of blackout, risk of approaching the victim):
  Prohibition from approaching specific places/persons, communication ban + electronic monitoring + signature + curfew outside working hours if necessary.

• Package C (Risk of digital evidence tampering):
  Prohibition of using certain devices, digital monitoring requirement + signature + limited permission for professional activity.

• Package D (High but manageable risk):
  House arrest + electronic ankle monitor + weekly/more frequent signing in + communication restrictions + YÇY (Youth and Sports Directorate).

The court needs to answer the question, "Why is this package insufficient?"; if it cannot, the arrest becomes disproportionate.

13) Sample Appeal/Eviction Petition Template (Summary)

Title: Appeal Against Arrest Warrant / Appeal Against Continuation of Detention and Request for Supplementary Judicial Control
To the Honorable Court/Judge;

1. There is no strong suspicion of guilt against the client ; the data in the file [camera footage/HTS/clarified statement] contradicts itself . The evidence set does not pass the legality and supporting evidence tests.

2. The reason for the arrest is stated in abstract terms. The claim of a flight risk lacks substance in light of the client's fixed residence, regular employment, family ties, and the fact that his passport has been confiscated . The allegation of tampering with evidence is also not substantiated; the majority of the evidence has already been collected.

3. Proportionality and the principle of last resort: Given the nature of the crime and the potential sanctions, prolonged detention is disproportionate . Risks can be effectively managed through judicial supervision

4. Our Proposed Alternative Package of Measures:

   • Travel ban,

   • Weekly signature obligation,

   • Communication restrictions and electronic surveillance with specific individuals,

   • Not leaving the address/not going out at night,

   • Bail if necessary. Result: We request that the arrest warrant be lifted and that our client be immediately released under the specified judicial control measures . Attachments: [Residence certificate, employment contract/activity certificate, family registration certificate, health report, etc.]
     
     

14) Special Cases and Sensitivity Points

• Pregnancy, serious illness, disability: The proportionality and necessity of detention must be more strictly monitored; health reports and the suitability of the conditions of imprisonment must be meticulously examined.

• The best interests of the child: Impacts on family integrity; caregiving responsibilities; priority of alternative solutions.

• First-time offender, clean criminal record: Factors that reduce the risk of fleeing/concealing evidence.

• Professional considerations: Statuses such as physician, teacher, public servant, and student should be taken into account in the individualization process.

• Prolonged detention: If no “new” grounds are presented during periodic review , continued detention increases the risk of violations

15) Arrest During the Investigation vs. Prosecution Phase

• Investigation: Evidence is collected rapidly; the risk of tampering with evidence is prominent during this process. As time passes, the risk decreases → transition to judicial control.

• Prosecution: Evidence has largely been collected; the goal is to ensure a regular trial and attendance. New and strong grounds are required for continued detention.

• Detention following conviction: The mere imposition of a prison sentence does not automatically justify "escape"; concrete evidence and proportionality are still required.

16) Evidence Gathering Status and Timeline Management

Keeping a chronology is very useful in practice as a lawyer:

• T0: Arrest–detention–interrogation; list of evidence.

• T1: Search-seizure-digital image; is a criminal/medical report awaited?

• T2: Have the witness/victim statements been completed?

• T3: What do the expert/technical reports say?

• T4: Missing items; likelihood of completion and impact on the risk of evasion/cover-up. This timeline embodies the narrative of "reduced risk" with each appeal against a continuation decision
  

17) Digital Evidence and Its Impact on Arrest

• the chain security and image acquisition protocolis not followed, the evidence loses value.

• Problems accessing encrypted devices/accounts can increase the risk of blackouts; however, the risk quickly decreases once access is restored or content is backed up .

• Securing cloud data minimizes the risk of data breaches; in this case, forensic oversight takes priority.

18) Foreigners and International Connections

• Foreign nationality, residence/work permit, and international mobility alone do not create a presumption of flight; however, the risk increases when combined with concrete facts .

• bail, electronic monitoring, and passport confiscation can be an alternative to arrest in many cases.

19) Application Notes: Evidence and Presentation in the Defense

• Evidence breakdown: What does each piece of evidence prove? Are there any contradictions? Legality assessment.

• Risk matrix: Compare evasion/blackout claims on a “low-medium-high” scale; countermeasures .

• Personal status file: Family/work/health/residence documents; social roots.

• Alternative course of action: Present the judge with a clear, workable plan in response to the question, "How will this work if you implement it?"

20) Frequently Asked Questions (FAQ)

Q: Is arrest mandatory if there is a "catalog crime"?
A: No. The catalog a presumption of the existence of grounds for arrest ; however, strong suspicion, proportionality , and the inadequacy of alternative judicial control measures must also be justified.

Q: Does saying "the penalty is very severe" prove the risk of escape?
A: Not on its own. Concrete facts that strengthen the risk of escape are needed (lack of fixed residence, passport movements, behaviors to avoid capture, etc.).

Q: Will detention continue after evidence is collected? A: As the risk of tampering with evidence decreases, it becomes more difficult to continue detention ; the transition to judicial supervision becomes more challenging.

Q: What arguments are prominent in challenging an arrest? A: Strong suspicion of weakness or unsubstantiated grounds for escape/concealment, and the "sufficiency and effectiveness" of your proposed alternative measures package

Q: How is prolonged detention assessed as a violation? A: The ECHR and the Constitutional Court tend to find violations when abstract grounds for continued detention are presented and alternatives are not discussed ; new facts are sought during periodic reviews .

21) Conclusion and Practical Recommendations

1. Freedom is the rule, arrestis the exception. of last resort must be meticulously applied in every case.

2. The standard of strong suspicion requires quality and consistency of evidence; illegally obtained evidence cannot be relied upon.

3. Risks of escape/blackout should be supported by concrete facts , not abstract ones .

4. Judicial control measures are available in a wide range; a combination of multiple measures is sufficient in most cases.

5. The reasoning must be individualized: a statement specific to the individual, the case, the evidence, and the context of the risk is necessary.

6. As time passes, the justification for the continued detention must become more convincing and concrete

7. Petition technique : Convince the judge with a table of evidence + risk matrix + alternative response plan + personal case file .

22) Example “Risk Matrix – Alternative Measure Matching” (Short Template)

Arrest is an exceptional protective measure; it requires the presence of the triad of strong suspicion + concrete grounds for arrest + proportionality/last resort , along with individualized and current justification. The defense's task is to remind the court of the burden of concrete justification , to technically formulate alternative judicial control measures, and to incorporate the proportionality argument into the case file. This approach guarantees not only the right to liberty but also the legitimacy of the trial.

                                                                                                                                                                 Ada Ceren KENDİGELEN