Overview
Croatia has been an EU member state since 1 July 2013, a Schengen member since January 2023, and a member of the eurozone since 2023. The basis for extradition cooperation with Germany is Framework Decision 2002/584/JHA and Sections 78 ff. IRG.
Croatia plays a particular role in German extradition practice — not only because of the large community of Croatian origin in Germany (over 450,000 people with Croatian roots), but also because of the ECtHR's leading judgment Muršić v. Croatia (Grand Chamber, judgment of 20 Oct 2016, application no. 7334/13). That decision laid down the binding standards for cell floor space (the 3 m² rule, the method of calculation, the strong presumption of a violation of Article 3 ECHR) for the entire European legal area — paradoxically against Croatia itself. Those standards apply consistently today in ECJ mutual-legal-assistance practice (cf. Dorobantu, C-128/18, para. 77).
In specific extradition practice, the OLG Koblenz, by decision of 1 July 2021 (4 AR 7/20 A), declared an extradition to Croatia inadmissible because the Croatian authorities had answered inquiries about the detention conditions specifically to be expected only hesitantly and in abstract form.
On the Croatian side, the Zakon o kaznenom postupku (Code of Criminal Procedure, NN 152/08 as subsequently amended) applies, as does the Zakon o pravosudnoj suradnji u kaznenim stvarima s državama članicama Europske unije (Act on Judicial Cooperation in Criminal Matters with EU Member States, NN 91/10).
Legal basis
Extradition to Croatia is governed primarily by Framework Decision 2002/584/JHA on the European Arrest Warrant, transposed domestically in Sections 78 ff. IRG (Eighth Part). Croatia transposed the Framework Decision with the Zakon o pravosudnoj suradnji (NN 91/10).
On the German side, the Higher Regional Courts are competent in the admissibility proceedings (Section 29 IRG); the granting decision is made by the General Public Prosecutor's Office (Section 79(2) IRG). On the Croatian side, the županijski sudovi (county courts) issue EAWs; the courts of review are the Visoki kazneni sud (High Criminal Court) in Zagreb. The highest instance in criminal matters is the Vrhovni sud (Supreme Court) in Zagreb; the constitutional court is the Ustavni sud.
For German citizens, Article 16(2) of the Basic Law in conjunction with Section 80 IRG applies. For Croatian citizens, Article 9 of the Croatian Constitution governs the extradition of a state's own nationals; that restriction is limited by the EAW Framework Decision. For dual Croatian–Serbian nationals, ECJ, C-237/21 S.M. of 22 Dec 2022 (the Petruhhin line applied to a Bosnia-Herzegovina request) is decisive.
Country-specific issues in Croatia
ECtHR Muršić v. Croatia (7334/13) — cell floor space: The Grand Chamber judgment of 20 October 2016 is the central reference decision on cell floor space in European mutual-legal-assistance practice. Its key holdings: (1) A cell floor space of less than 3 m² per detainee in a shared cell gives rise to a strong presumption of a violation of Article 3 ECHR (para. 124). (2) In the calculation, sanitary areas are not to be counted, whereas furniture areas are to be counted (para. 114). (3) The strong presumption can be rebutted only where three conditions are met cumulatively: a short, occasional and minor reduction; sufficient freedom of movement outside the cell; and generally appropriate detention conditions (para. 138). The ECJ adopted these principles in Dorobantu (C-128/18).
OLG Koblenz 4 AR 7/20 A of 1 July 2021: The OLG Koblenz set aside an extradition that had initially been declared admissible under Section 33 IRG and declared the extradition inadmissible, because the Croatian authorities had answered detailed follow-up questions about the concrete detention conditions only hesitantly and in abstract terms. Guiding principle: the executing court must have, within a reasonable time, a sound factual basis regarding the facility-specific detention conditions; if this is lacking, the extradition is to be refused under Section 73 IRG (ordre public).
Rule of law in the judiciary: The Croatian judiciary is assessed in the EU Rule of Law reports (most recently 2024) with isolated criticism, but without a finding of structural deficiencies. The handling of corruption proceedings and the length of court proceedings remain points of criticism (USKOK — Ured za suzbijanje korupcije i organiziranog kriminaliteta).
Regional prison system: The central correctional facilities are Lepoglava (a high-security prison, northern Croatia), Glina, Požega (women), and Turopolje. The CPT report 2019/2020 documented overcrowding in individual facilities, in particular Lepoglava and Zagreb-Remetinec (pre-trial detention).
Dual criminality: Outside the list catalogue of Article 2(2) of the EAW Framework Decision, a substantive review applies. A Croatian particularity: the Kazneni zakon (Criminal Code, NN 125/11) contains a broadly framed offense of zlouporaba položaja i ovlasti (abuse of office and authority, Art. 291 KZ), the scope of which must be assessed in the individual case when reviewing dual criminality.
Detention conditions and the human-rights review
The detention conditions in Croatian prisons were the subject of the ECtHR's landmark decision Muršić v. Croatia (Grand Chamber, 20 Oct 2016, 7334/13). The case concerned Bjelovar prison; for a period of 50 days, Muršić had less than 3 m² of personal cell space available. For that period the ECtHR found a violation of Article 3 ECHR.
The decision set the standard for the entire ECHR- and EU-law review of detention conditions: 3 m² as the absolute minimum in shared cells (the Muršić formula); furniture counts, sanitary areas do not. The ECJ adopted these principles in Dorobantu (C-128/18, 15 Oct 2019, para. 77).
After the Muršić decision, the Croatian government launched an extensive prison-reform program. Nevertheless, the CPT report 2019/2020 and subsequent reports document overcrowding in individual facilities (Lepoglava, Zagreb-Remetinec, Split), as well as deficiencies in medical care and protection against violence. In 4 AR 7/20 A (1 July 2021), the OLG Koblenz held a specific extradition inadmissible for lack of sound assurances regarding the concrete detention conditions.
What the defense should do: detailed submissions on the facility specifically envisaged (often Lepoglava or Glina), production of current CPT reports, obtaining facility-specific assurances with Muršić-compliant floor-space figures, and — in cases of pre-trial detention — a particular review of the situation in Remetinec (Zagreb).
Lines of defense
The defense in Croatia EAW cases is oriented around the following points:
- Article 3 ECHR / Article 4 of the EU Charter (the Muršić standard): for shared cells, obtain an assurance of a cell floor space of at least 3 m² (excluding sanitary facilities, including furniture); where it is not met, conduct an individual-case review under Muršić para. 138.
- Facility-specific assurance (OLG Koblenz 4 AR 7/20 A): general assurances are not sufficient; demand facility-specific information on Zagreb-Remetinec, Lepoglava, Glina, etc.
- Section 80 IRG (extradition of Germans): connection to the place of the offense and an assurance of return.
- Section 83b(2) IRG: exercise of discretion by the General Public Prosecutor's Office in the case of Croatian citizens long resident in Germany.
- Dual criminality: careful classification, in particular in cases of abuse of office (Art. 291 of the Croatian Criminal Code) and offenses against property.
- Section 83 IRG (judgments in absentia): an assurance of a retrial under obnova postupka (Sections 497 ff. of the Zakon o kaznenom postupku).
- Rule of specialty (Section 83h IRG): limitation to the offenses granted.
- Double jeopardy (ne bis in idem): in particular for dual Croatian–Serbian nationals, taking the Petruhhin/S.M. line into account (ECJ C-237/21).
- Constitutional complaint with an urgent application (Section 32 BVerfGG): particularly promising where detention conditions are challenged under the Muršić standard.
Legal representation in Croatian extradition proceedings
An extradition case is a specialized mutual-legal-assistance procedure that goes beyond classic criminal defense. Engaging a defense lawyer specialized in extradition law at an early stage is regularly decisive — not only after the formal extradition arrest warrant has been issued, but already from the moment of an arrest based on an Interpol notice, an SIS alert or a European Arrest Warrant.
As a Certified Specialist in Criminal Law with a focus on extradition law, I advise and represent affected persons nationwide before the competent Higher Regional Courts and in constitutional complaint proceedings before the Federal Constitutional Court.