Cross-border criminal investigations in the Netherlands: your rights and defence

A cross-border criminal investigation is a case where the suspect, the evidence or the money sits in more than one country. The authorities then need a tool such as mutual legal assistance, a European Investigation Order or an arrest warrant to reach across the border, and if the Netherlands is one of the countries involved, Dutch criminal procedure governs your position.

The Openbaar Ministerie (Public Prosecution Service) decides whether to prosecute, the rechter-commissaris (investigating judge) authorises and supervises the heavier coercive measures, and you have the right to remain silent and to be assisted by an advocaat from the first police interview onwards. The jurisdiction rules sit in the Wetboek van Strafrecht (Criminal Code), and the cooperation rules in Book 5 of the Wetboek van Strafvordering (Code of Criminal Procedure).

Most people who become involved in an international case are not arrested at dawn. More often they receive a summons as a witness, find a bank account frozen, learn that a foreign prosecutor has asked Dutch police for their records, or are stopped at a border because another state circulated an alert. What you do in those first days shapes the rest of the case.

When does Dutch criminal law apply to conduct abroad?

Dutch criminal law applies first to offences committed on Dutch territory, under article 2 of the Criminal Code. That territorial rule reaches further than it looks: an offence counts as committed in the Netherlands if any part of the conduct or its effect took place here. A server in Amsterdam, a Dutch bank account used to receive funds, a Dutch company invoiced in a fraud scheme, or a victim living in the Netherlands can each anchor a case to Dutch jurisdiction, even when nobody involved ever set foot in the country.

The Criminal Code adds personal grounds of jurisdiction as well. Under article 7, Dutch criminal law applies to a Dutch national who commits an offence abroad, provided the act is punishable under Dutch law and under the law of the country where it happened. That double criminality requirement is the practical filter: conduct that was lawful where it happened generally cannot be prosecuted here on this ground, though the Code extends jurisdiction over residents for a defined list of serious offences. Article 5 works the other way and covers offences committed abroad against a Dutch national, but only for crimes carrying a statutory maximum of at least eight years, again subject to double criminality.

The mirror image of jurisdiction is the ban on being tried twice. Article 68 of the Criminal Code bars a second Dutch prosecution after a final judgment, and article 54 of the Convention implementing the Schengen Agreement extends that protection across the participating states: once a case has been finally disposed of in one of them, and any penalty enforced or no longer enforceable, the other states may not prosecute the same facts again. Article 50 of the EU Charter of Fundamental Rights states the same principle at Union level. Establishing early that an earlier foreign case was finally disposed of is one of the strongest defences available in a cross-border matter, and it is often overlooked.

How do foreign authorities obtain evidence in the Netherlands?

Foreign authorities cannot investigate on Dutch soil themselves; they must ask, and Book 5 of the Code of Criminal Procedure sets out how. Title 1 of that Book governs classic mutual legal assistance: a request from a foreign state is assessed by the Public Prosecution Service, coercive measures are only used if the underlying offence would also justify them in a Dutch case, and a request is refused where it conflicts with Dutch law or the Netherlands’ treaty obligations. Requests are routed through the regional international legal assistance centres and the national centre that coordinates them, not directly to a local police station.

Within the European Union, the ordinary instrument is now the European Investigation Order rather than the older letter rogatory. It was introduced by Directive 2014/41/EU and implemented in Title 4 of Book 5 of the Code of Criminal Procedure. An issuing authority in one member state orders a specific investigative measure, a Dutch public prosecutor recognises it and arranges its execution, and the grounds for refusal are limited and listed. The Directive sets tight timeframes: a decision on recognition within thirty days of receipt, and execution within ninety days of that decision, with shorter deadlines where the measure is urgent. In practice, a hearing, a house search or a bank disclosure in the Netherlands can be arranged for a foreign prosecutor within a matter of weeks.

Since 18 August 2026, a further route has been open. Regulation (EU) 2023/1543 on European Production and Preservation Orders lets a judicial authority in one member state serve an order directly on a service provider offering services in the Union, bypassing the authorities of the state where the data is stored. Subscriber and traffic data, and in defined cases content data, must be produced within ten days, or within eight hours in an emergency. For anyone whose case involves messaging, email or cloud accounts, this shortens the distance between a foreign investigation and your data considerably.

Cooperation bodies sit alongside these instruments. A joint investigation team lets prosecutors and investigators from two or more states run a single investigation under an agreement fixing which law applies to which act. Eurojust and Europol, both seated in The Hague, coordinate cases and exchange intelligence, and the European Public Prosecutor investigates and prosecutes fraud affecting the Union budget through delegated prosecutors in participating states, including the Netherlands. A defence that treats each jurisdiction as a separate matter tends to be a step behind an investigation that is already run as one.

What are your rights when Dutch police question you?

Once there is a reasonable suspicion that you committed an offence, you become a verdachte (suspect) within the meaning of article 27 of the Code of Criminal Procedure, and a different set of rules applies to you than to a witness. Before any questioning about your involvement, the interviewing officer must caution you that you are not obliged to answer, under article 29 of the Code. That right to silence is not a technicality: in cross-border cases, statements given early and without advice are routinely relied on in a second country, where the same words can carry an entirely different legal meaning.

Article 28 of the Code gives every suspect the right to be assisted by counsel. Since Directive 2013/48/EU was implemented, an arrested suspect is entitled to consult a lawyer before the first police interview and to have a lawyer present during it, and a suspect held in custody is assigned counsel through the legal aid system if none has been chosen. You may waive that assistance, but a waiver given in a language you do not command, at night, without knowing what the file contains, carries little weight and is one of the most common avoidable mistakes in international cases.

Language rights are enforceable rights, not courtesies. Directive 2012/13/EU requires written information about your rights in a language you understand, and Directive 2010/64/EU guarantees interpretation during questioning and hearings, and written translation of the essential documents in the case. Dutch authorities are in principle required to engage interpreters and translators from the statutory register kept under the Wet beëdigde tolken en vertalers (Act on Sworn Interpreters and Translators). If you are questioned through an ad hoc interpreter, or a summons or detention order has not been translated, say so on the record; it is far harder to raise later.

How long can you be held before you see a judge?

Dutch pre-trial detention runs in fixed blocks, and knowing them tells you how much time your lawyer actually has. After arrest, you may first be held for questioning for a maximum of nine hours, with the night hours between midnight and nine in the morning not counted. If the investigation requires it, a public prosecutor or assistant public prosecutor can then order inverzekeringstelling (police custody) for up to three days, extendable once by a further three days in case of urgent necessity.

Within three days and eighteen hours of arrest, you must be brought before the rechter-commissaris, who reviews whether the deprivation of liberty is lawful and may order your release. The investigating judge can then order bewaring (remand) for up to fourteen days, after which the court in chambers may order gevangenhouding, for up to ninety days, so that pre-trial detention can last up to 104 days before the trial hearing must begin. Throughout, detention requires both a serious suspicion and a statutory ground, such as flight risk, risk of repetition or the interest of the investigation. Flight risk is the ground most readily accepted against a suspect with a foreign residence, which is exactly why an early, documented proposal on conditions, such as surrendering a passport, a Dutch correspondence address and reporting obligations, can make the difference between remand and release under conditions.

What happens if you are arrested on a European arrest warrant or an extradition request?

If another EU member state wants you handed over, it issues a European arrest warrant under Framework Decision 2002/584/JHA, implemented in the Netherlands in the Overleveringswet (Surrender Act). The District Court of Amsterdam has exclusive jurisdiction over surrender proceedings for the whole country, through its international legal assistance chamber, so wherever you are arrested, that is where your case is heard. The Framework Decision requires a final decision within sixty days of arrest, extendable by thirty days where that deadline cannot be met, and for the thirty-two categories of serious offences it lists, the court does not test double criminality.

The scope for argument is narrower than in an ordinary criminal case, but it is real. Surrender is refused or postponed where the warrant is defective, where prosecution in the Netherlands is barred by ne bis in idem or by the statute of limitations, and where the person concerned would face a real risk of inhuman or degrading detention conditions, or of a breach of the right to a fair trial in the issuing state. The Court of Justice of the European Union applies a two-stage test for those risks: a general deficiency in the issuing state is not enough on its own, and the court must go on to assess the specific and individual risk to this person, based on concrete information obtained from the issuing authority. Dutch nationals and settled residents are in principle surrendered for prosecution only against a guarantee that any custodial sentence will be served in the Netherlands, after which the sentence is taken over and adapted under Dutch legislation on the mutual recognition of custodial sanctions.

Requests from states outside the European Union follow the older route of the Uitleveringswet (Extradition Act) and the applicable treaty. There the roles are divided: the district court rules on admissibility and advises the minister, and the Minister of Justice and Security takes the final decision, which can be challenged before the civil court in summary proceedings. The Netherlands does not extradite its own nationals for prosecution without a guarantee of return. One point deserves separate mention because it causes so much confusion: an Interpol red notice is a request for police cooperation, not a judicial arrest warrant, and it can be contested before the Commission for the Control of Interpol’s Files, which can order the data deleted.

Can evidence gathered abroad be challenged?

Only in part, and it is worth being honest about where the line runs. Dutch courts apply the vertrouwensbeginsel (principle of mutual trust): where an investigative act was carried out abroad by a foreign authority under its own law, the Dutch court does not as a rule review whether that authority followed its own rules. What the Dutch court does review is whether the trial as a whole remains fair under article 6 of the European Convention on Human Rights, whether the Dutch authorities acted lawfully when they requested, received or used the material, and whether the defence has had a genuine chance to test the reliability of the evidence.

Where Dutch procedural rules were breached, article 359a of the Code of Criminal Procedure provides the remedy. The court can note the defect, reduce the sentence, exclude the evidence, or, in the most extreme cases, declare the prosecution inadmissible, weighing the interest infringed, the seriousness of the defect and the harm caused. In its overview judgment of 1 December 2020 (ECLI:NL:HR:2020:1890), the Supreme Court adjusted that framework, leaving more room for exclusion where a fundamental right has been seriously affected, though the threshold remains high and a defence argument not tied to concrete harm to this defendant will not succeed.

The large encrypted-communication datasets seized in French and Belgian investigations and shared with Dutch prosecutors through joint investigation teams show how this works in practice. Dutch courts have generally accepted the material rather than testing the foreign interception itself, while insisting that the defence must be able to check the reliability and completeness of what was disclosed, and that the prosecution must be transparent about how messages were selected and attributed to a user. The productive line of defence is therefore usually attribution and context, rather than the legality of a foreign operation.

What is the cross-border exposure for companies and directors?

A company can commit an offence in its own right. Article 51 of the Criminal Code makes legal persons punishable and allows those who ordered or effectively directed the conduct to be prosecuted alongside the company, which is why a corporate investigation so often becomes a personal one for a director or compliance officer. Economic, financial and environmental offences are handled by the Functioneel Parket, the specialised branch of the Public Prosecution Service, with the FIOD as the investigation service, and these are the cases in which foreign regulators and prosecutors are most often involved.

The recurring themes are money laundering, punishable under articles 420bis to 420quater of the Criminal Code, foreign bribery, and breaches of export controls and financial sanctions. Sanctions in particular have become a criminal enforcement priority rather than an administrative one; we set out the questions that arise there in our articles on criminal enforcement of international sanctions and on international and domestic penal measures. Where an internal investigation runs in parallel with a criminal one, the sequence matters: interview notes and forensic reports prepared for the board can end up in a criminal file, and legal professional privilege in the Netherlands attaches to the advocaat, not to the company or to an in-house adviser without that status.

What should you check as a suspect or witness?

Establish your status first, because a witness can be compelled to answer and a suspect cannot (article 29 of the Code of Criminal Procedure). Then protect the file and coordinate your defence.

• Ask, and have it recorded, whether you are approached as a suspect or as a witness.
• Ask on what legal basis the contact is made: a Dutch investigation, a European Investigation Order or a request for mutual legal assistance, and from which authority.
• Do not delete messages, documents or accounts once you know an investigation exists; preserve them, including metadata. Deleting material can count heavily against you.
• Do not discuss the case with co-suspects or staff who may be interviewed; route communication through your lawyer so that it stays privileged.
• Check whether an alert or warrant has been circulated before you travel.
• Check whether the same facts were already finally disposed of in another Schengen state (article 54 of the Schengen Convention).

One lawyer should hold the overview across jurisdictions, so that a statement made in one country does not undermine a position taken in another. Our overview of the criminal procedure in the Netherlands, from investigation to verdict describes the ordinary Dutch route, and our article on phishing and internet fraud covers online fraud allegations.

What should you check as a company?

Check who in the organisation is exposed, because under article 51 of the Criminal Code those who ordered or directed the conduct can be prosecuted alongside the company. FIOD and the Functioneel Parket investigate most of these cases.

• Which directors, compliance officers or employees may be treated as suspects rather than witnesses?
• Is an internal investigation set up through an advocaat, so that legal professional privilege applies to its work product?
• Are data held with service providers that may receive a European Production Order, with a ten-day deadline?
• Are seized or frozen assets, and sanctions exposure under the Sanctions Act 1977, being dealt with in parallel?
• Is there one coordinating counsel for all jurisdictions involved?

What can we do for you in a cross-border criminal investigation?

Our criminal law team assists individuals and companies in Dutch, English and other languages, and coordinates with counsel abroad.

• We attend police interviews in the Netherlands and advise you beforehand on your right to silence.
• We argue for release under conditions before the rechter-commissaris and the court in chambers.
• We act in surrender proceedings before the District Court of Amsterdam and in extradition cases.
• We challenge European Investigation Orders, mutual legal assistance requests and seizures affecting your data or assets, including asset freezes under sanctions regimes.
• We test foreign evidence under article 359a of the Code of Criminal Procedure and article 6 ECHR.
• We represent companies and directors in investigations by the Functioneel Parket and the FIOD.

Summary

• If the Netherlands is one of the countries involved, Dutch criminal procedure governs your position, even when the conduct or the other parties are abroad.
• Territorial and personal jurisdiction under articles 2, 5 and 7 of the Criminal Code can reach conduct with only a partial Dutch connection, subject to double criminality where it applies.
• Foreign authorities need a formal route, mutual legal assistance, a European Investigation Order, or since 18 August 2026 a European Production or Preservation Order, to gather evidence here; each has fixed deadlines and limited grounds for refusal.
• You have the right to silence, to a lawyer from the first interview, and to interpretation and translation; a waiver of these rights given without proper information is rarely worth giving.
• Establish your status, protect your file and coordinate your defence across jurisdictions from the first contact, since the early steps usually decide how the rest of the case goes.

Frequently asked questions