Ankèt kriminèl transfwontyè nan Peyi Ba yo: dwa ou ak defans ou

A cross-border criminal investigation is a criminal case in which the suspect, the evidence or the money sits in more than one country, so that the authorities have to use mutual legal assistance, a European Investigation Order or an arrest warrant to reach it. If the Netherlands is one of those countries, 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).

That framework matters more than the headlines about global crime. Most people who become involved in an international case are not arrested at dawn: they receive a summons as a witness, find a bank account frozen, discover that a foreign prosecutor has asked Dutch police for their records, or are stopped at a border because another state has circulated an alert. What you do in those first days shapes the rest of the case. The sections below set out when Dutch law applies to conduct abroad, how foreign authorities obtain evidence here, what rights you have during questioning and detention, how surrender and extradition work, and where foreign evidence can still be challenged.

When does Dutch criminal law apply to conduct abroad

Dutch criminal law applies in the first place to offences committed on Dutch territory (article 2 of the Criminal Code). That territorial rule reaches further than it looks, because an offence is treated 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 the case to Dutch jurisdiction even when the people involved never set foot in the country.

Beyond the territory, the Criminal Code adds personal grounds of jurisdiction. Under article 7 of the Criminal Code the Dutch criminal law applies to a Dutch national who commits an offence abroad, provided the act is a criminal offence under Dutch law and is also punishable under the law of the country where it was committed. That double criminality requirement is the practical filter: conduct that is lawful where it happened generally cannot be prosecuted here on this basis, although the Code extends jurisdiction over residents for a defined list of serious offences. Article 5 works the other way around and covers offences committed abroad against a Dutch national, but only for serious crimes carrying a statutory maximum of at least eight years and 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 has been enforced or can no longer be enforced, the other states may not prosecute the same facts again. Article 50 of the EU Charter of Fundamental Rights says the same at Union level. Establishing early that an earlier foreign disposal was final is one of the strongest defences available in a cross-border case, and it is frequently overlooked.

How 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 received and assessed by the Public Prosecution Service, coercive measures are only deployed if the underlying offence would also justify them in a Dutch case, and a request is refused where it conflicts with Dutch law or with 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 no longer the letter rogatory but the European Investigation Order, 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 has it executed, 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 this means a hearing, a house search or a bank disclosure in the Netherlands can be arranged for a foreign prosecutor in a matter of weeks.

Since 18 August 2026 a further route has been open. Regulation (EU) 2023/1543 on European Production and Preservation Orders allows a judicial authority in one member state to 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.

Alongside these instruments sit the cooperation bodies. A joint investigation team lets prosecutors and investigators from two or more states run a single investigation under an agreement that fixes which law applies to which act. Eurojust and Europol, both seated in The Hague, coordinate cases and exchange intelligence, and the European Public Prosecutor is competent to investigate and prosecute fraud affecting the Union budget through delegated prosecutors in the 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 being run as one.

Your rights when Dutch police question you

The moment there is a reasonable suspicion that you committed an offence you are 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 inform you that you are not obliged to answer. That caution follows from article 29 of the Code of Criminal Procedure, and the right to silence it protects is not a technicality: in cross-border cases, statements given early and without advice are routinely relied on in a second country where the legal significance of the same words is entirely different.

Article 28 of the Code of Criminal Procedure gives every suspect the right to be assisted by counsel. Since Directive 2013/48/EU was implemented, a suspect who has been arrested is entitled to consult a lawyer before the first police interview and to have a lawyer present during police interviews, and for a suspect held in custody counsel is assigned 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, is worth very little and is one of the most common avoidable mistakes in international cases.

Language rights are enforceable rights, not courtesies. Directive 2012/13/EU requires that you receive 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 beedigde tolken en vertalers (Act on sworn interpreters and translators). If you are questioned through an ad hoc interpreter, or if the summons or the order for your detention 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, which may be extended once by a further three days in case of urgent necessity.

Within three days and fifteen 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, extending pre-trial detention to a maximum of ninety days in total before the case has to be brought before the trial court. 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 precisely why an early, documented proposal on conditions such as surrender of a passport, a Dutch correspondence address and reporting obligations can make the difference between remand and release under conditions.

Arrest 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, which the Netherlands has implemented 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 will be heard. The Framework Decision requires a final decision within sixty days of arrest, extendable by thirty days where the deadline cannot be met, and for the thirty-two categories of serious offences listed in the Framework Decision 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 has built 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, on the basis of 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 the Dutch legislation on mutual recognition of custodial sanctions.

Requests from states outside the European Union follow the older route of the Uitleveringswet (Extradition Act) and the applicable extradition treaty. There the roles are divided: the district court rules on whether the request is admissible 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. A separate point deserves mention because it causes so much confusion: an Interpol red notice is a request for cooperation circulated among police forces, not a judicial arrest warrant, and it can be contested before the Commission for the Control of Interpol Files, which can order the data to be deleted.

Can evidence gathered abroad be challenged

Only in part, and it is important to be 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 complied with 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 themselves acted lawfully when they requested, received or used the material, and whether the defence has had a genuine opportunity to test the reliability of the evidence.

Where Dutch procedural rules were breached, article 359a of the Code of Criminal Procedure provides the remedies. 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 that was infringed, the seriousness of the defect and the harm caused. The Supreme Court tightened and recalibrated that framework in 2020, giving more room for exclusion where a fundamental right has been seriously affected, but the threshold remains high and a defence argument that is not connected 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 the 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, not the legality of a foreign operation.

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 the conduct or effectively directed it 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, which is 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, and the questions that arise there are set out in our article on criminal enforcement of international sanctions and in the broader overview of international and domestic penal measures. Where an internal investigation is running in parallel with a criminal one, the sequence matters: interview notes and forensic reports created 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 to do when a cross-border case reaches you

Establish your status first. Ask, and have recorded, whether you are being approached as a suspect or as a witness, because the two positions carry opposite obligations: a witness can be compelled to answer, a suspect cannot. Ask on what legal basis the contact is made, whether it concerns a Dutch investigation, a European Investigation Order or a request for mutual legal assistance, and which authority is behind it. That single question usually reveals where the real case is running and which country will ultimately decide your fate.

Then protect the file. Do not delete messages, documents or accounts once you know an investigation exists; in the Netherlands that behaviour is treated as an aggravating circumstance and can itself be an offence. Preserve what you have instead, including the metadata, and keep a note of who you spoke to and when. Do not discuss the case with co-suspects or with staff who may be interviewed, and route communication about the investigation through your lawyer so that it stays privileged. If you travel, check your exposure before you book, because an alert circulated in one state is acted on at the external border of another.

Finally, coordinate. A cross-border case with separate lawyers in each country, none of whom sees the whole picture, is the classic way in which a defence loses. One counsel should hold the overview, decide in which jurisdiction the case is best fought, and make sure that a statement made in one country does not undermine a position taken in another. It also helps to understand the ordinary Dutch route your case will follow, which we describe step by step in our overview of pwosedi kriminèl la nan Peyi Ba yo depi ankèt rive nan vèdik la. Where the underlying allegation concerns online fraud, our article on èskrokri ak fwod sou entènèt sets out the specific issues that arise.

Kouman Law and More ka ede

Law and More assists individuals and companies in criminal cases that cross a border: police questioning and pre-trial detention in the Netherlands, surrender and extradition proceedings, requests for mutual legal assistance and European Investigation Orders affecting your data, seizures and asset freezes under sanctions regimes, and criminal investigations by the Functioneel Parket and the FIOD. Our lawyers work in Dutch, English and other languages and coordinate with counsel abroad where a second jurisdiction is involved. If you have been contacted by an investigating authority, or you expect to be, our lalwa kriminèl team is available for a confidential first assessment of your position. You can reach us through the contact details on sit entènèt nou an.

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