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Aşağıda, gözaltı–ifade–arama/elkoyma–dijital delil–iletişimin denetlenmesi–dosyaya erişim başlıklarında temel haklar ve pratik savunma adımları özetlenmiştir.

1. Fundamental Procedural Rights

Arrest and Police Custody: Time Limits and the First 48 Hours

3) Search and Seizure (Physical Evidence)

  • Judicial Searches (Articles 116–119 of the Criminal Procedure Code)

    Searches of homes, workplaces, or other enclosed premises generally require a judicial warrant. In urgent circumstances, they may be authorised by a written order of the public prosecutor or, where the prosecutor cannot be reached, by a written order of the senior police officer, but only in exceptional cases. Persons required by law must be present during the search, and two witnesses must attend the search in accordance with Article 119(4).

    Seizure (Article 127 of the Criminal Procedure Code)

    Where property is seized without a prior judicial order, the measure must be submitted to a judge for approval within 24 hours. If the judge does not issue a decision within the following 48 hours, the seizure automatically lapses.

    Strategy

    Carefully review all search and seizure documents to verify the date, time, legal grounds, location, and signatures. If any information is missing or the measure was carried out solely on the basis of oral instructions, ensure that an objection is recorded and challenge the legality of the measure.

4) Digital Evidence (Article 134 of the Criminal Procedure Code)

  • Article 134 governs the search, copying, and seizure of computer systems and digital data. In practice, creating a forensic image and generating cryptographic hash values are recognised as essential safeguards for preserving the integrity of digital evidence. Orders issued by the public prosecutor must be submitted to a judge for approval within 24 hours. If approval is not obtained, any copies or decrypted data must be destroyed.

    Request:

    That a forensic image be created and hash values generated to preserve the integrity of the evidence and avoid direct examination of the original storage media.

    Object if:

    No forensic image or hash values were created;

    On-site forensic examination was not possible; or

    Judicial approval was obtained outside the statutory time limits.

    Such circumstances may render the digital evidence unlawful.

5) Managing Police Interviews and Judicial Questioning

Access to the Investigation File and Confidentiality Orders (Article 153 of the Criminal Procedure Code)

  • Defence counsel is entitled to examine the investigation file and obtain copies of documents. Restrictions may be imposed only by judicial order, only for specified categories of offences, and only where disclosure would jeopardise the purpose of the investigation. Any restriction must remain proportionate both in scope and in relation to the categories of evidence affected.

    Strategy

    Request a copy of the confidentiality order together with its reasoning. Where access has been disproportionately restricted—particularly in relation to documentary, audio, or video evidence beyond confidential witness material—consider challenging the restriction.

7) Interception of Communications, Technical Surveillance, and Undercover Investigators

8) Time Limits and Available Remedies

9) Common Procedural Violations

  • Searches of homes or workplaces conducted solely on the basis of oral instructions without a written judicial warrant or written prosecutorial order;

    Digital searches or forensic examinations carried out without creating forensic images or generating hash values;

    Statements obtained without informing the suspect of their rights under Article 147 or through prohibited methods contrary to Article 148 of the Criminal Procedure Code;

    Interception orders issued under Article 135 without adequate factual reasoning or without properly identifying the relevant telephone line or electronic device.