A Spanish businessman with business interests in Bogotá receives the news from his lawyer, not the police: the Colombian Attorney General's Office has requested his extradition. From that moment on, every document that makes up the case file—and every missing document—can decide his fate.
Spain and Colombia maintain one of the most active criminal cooperation flows in the Ibero-American region. Executives, former officials, and business people with lives on both sides of the Atlantic increasingly face a procedure whose outcome depends less on the treaty itself than on Spanish constitutional jurisprudence, which has increasingly specified, with growing rigor, which guarantees are non-waivable.
The antiquity of the applicable framework surprises many clients: the current instrument is the Extradition Treaty between Spain and Colombia, signed in Bogotá on July 23, 1892, amended by the Protocol of March 16, 1999 (in force since September 17, 2005). A 19th-century text projected onto 21st-century economic crime. That tension—between an old treaty and a modern, accusatorial Colombian procedural system—explains the origin of the most relevant constitutional ruling of the last decade on this matter.
Why decisive jurisprudence is constitutional, not of the Supreme Court
In Spanish passive extradition, the decision rests with the Criminal Chamber of the National High Court—a Section at first instance, the Plenary on appeal. No “appeal in cassation before the Supreme Court” lies against these court orders. Subsequent judicial review is exercised through an “amparo appeal before the Constitutional Court,” when a fundamental right is at stake. Therefore, the doctrine governing this matter originates from the Constitutional Court, and not from the Second Chamber. Whoever promises to «take the extradition to the Supreme Court» is describing a system that does not exist.
STC 147/2020: When the extra-traditional title is no longer sustainable
Colombia requested the extradition of a Spanish citizen under the 1892 Convention, in proceedings for alleged bribes linked to the manipulation of the judicial assignment of a commercial lawsuit. The request was initially supported by a preventive detention measure ordered by a Colombian guarantees court. That ruling was later “annulled in Colombia” by another judicial body. From that moment on, the claim was sustained solely by the “prosecutorial indictment”, submitted to the National Court as the equivalent of the «order to proceed» required by “Article 8.2 of the Convention”.
The National High Court considered that document sufficient and authorized the surrender. The requested person filed an appeal for amparo, and the Constitutional Court granted it to him, with a dual-scope doctrine:
First, it established a “standard of enhanced reasoning”: when a judicial ruling authorizes an extradition, it compromises substantive fundamental rights—personal liberty (Article 17.1 of the Spanish Constitution), freedom of residence and movement (Article 19 of the Spanish Constitution)—which obliges Spanish courts to conduct a real, non-formulaic scrutiny of the request and its documentary backing.
Second, it demanded “effective judicial intervention in the extradition title.” Relying on the doctrine of the Court of Justice of the European Union regarding the necessity for a judicial authority—and not a prosecutor subject to instructions from the Executive—to order or ratify the deprivation of liberty (a criterion established by the CJEU in joined cases C-508/18 and C-82/19 PPU of May 27, 2019, concerning German prosecutors), the Constitutional Court concluded that a prosecutorial indictment, following the annulment of the judicial detention order, “could not serve as coverage” for surrender pursuant to Article 8.2 of the Convention.
Since then, in any extradition based on the Spanish-Colombian Treaty, the defense must audit the title from day one: is there a valid judicial arrest warrant in Colombia? Was it annulled, replaced, or ratified? Does the submitted documentation actually satisfy Article 8.2? That seemingly formal examination frequently proves decisive.
The previous pro-rights line: SSTC 32/2003 and 148/2004
STC 147/2020 did not emerge in a vacuum. It builds upon an expansive line consolidated two decades earlier:
The “STC 32/2003” demanded from Spanish courts «a careful verification work» of the circumstances alleged by the requested party, because once the surrender has taken place, any violations of rights normally become “irreparable.” In that case—an executive extradition for the enforcement of a sentence—the Court granted the constitutional relief due to the lack of an official translation of the sentencing resolutions from the requesting State.
The STC 148/2004, referring to an extradition to Albania, declared that effective judicial protection was violated because the judicial bodies “did not deploy any activity” to verify the specific allegations of political persecution made by the requested person, limiting themselves to a formal review of the documents. The rationale is clear: when the requested person invokes grounds for denial connected to the potential violation of their rights in the country of destination, the Spanish court must “investigate,” not dismiss the matter.
Both rulings granted the amparo relief and constitute what may be called the “indirect dimension” of fundamental rights in extradition: the Spanish judge is also accountable for foreseeable harms abroad that their surrender decision makes possible.
The 2024 modulation: the title is not examined in the abstract, but treaty by treaty
The doctrine, however, is not a one-way street. In a block of judgments handed down the same day—“STC 17/2024” (Plenary, January 31, 2024) and its twin rulings “STC 34/2024, 36/2024, 37/2024, and 43/2024” (all dated March 11, 2024)—issued in extradition proceedings to “Morocco,” the Constitutional Court “denied the amparo relief” and clarified the contours of the requirement established in 2020.
The Court recalled that, in the Colombian case, the key had been the “subsequent annulment” of a judicial detention order and the specific debate regarding Article 8.2 of that bilateral treaty. It clarified that this conclusion “is not automatically transferred” to other treaties with different wording, in which an arrest warrant issued by an authority that the requesting State's legal system integrates into its judicial branch may constitute a valid title, provided its jurisdiction, independence, and the proportionality of the measure are established.
Strategic lesson: constitutional jurisprudence on extradition is a reiterated and nuanced doctrine, not a uniform block. Invoking STC 147/2020 without studying the exact text of the applicable treaty and the precise nature of the extradition request is, today, a strategy doomed to failure.
Comparative law: a trend that transcends Spain
Spain is not alone in this movement. The European Court of Human Rights has reinforced in recent years the control over diplomatic guarantees and changes in circumstances in the requesting country: in “Compaoré v. France” (judgment of September 7, 2023), the ECtHR recalled that guarantees obtained before a radical political change in the requesting State—in that case, a coup d'état—must be reassessed, and cannot be taken as automatically valid. This is the same underlying logic that inspires Spanish constitutional jurisprudence: extradition is not a procedure of automatic mutual recognition, but an act that compromises the responsibility of the requested State for what happens after the surrender.
Five practical keys for defense in Spain-Colombia extraditions
1.- Audit the extradictional title from day one. Current judicial resolution, history of annulments or substitutions, and rigorous contrast with Article 8.2 of the 1892 Convention.
2.- Document, do not proclaim. Destination risk allegations—procedural guarantees, conditions of detention, spurious motivation—only trigger the judicial duty of inquiry when they are supported by concrete and verifiable data, in accordance with the doctrine of Constitutional Court Rulings (SSTC) 32/2003 and 148/2004.
3.- Manage the precautionary phase from the initial appearance. The initial appearance before the Central Investigating Court determines whether the proceedings are faced in provisional release with measures—withdrawal of passport, periodic appearances—or in prison. Documented established ties heavily influence this decision.
4.- Coordinate the INTERPOL channel with the extradition. Many Colombian claims are preceded by a red notice. Challenging it before the Commission for the Control of Interpol's Files (CCF) and opposing it before the National Court are distinct avenues that must be executed in a coordinated manner, not in isolation.
5.- Anticipate the amparo proceeding from the first instance. The amparo proceeding requires having invoked the violation since the beginning of the procedure. Constitutional strategy is not improvised at the end: it is built in the first brief.
Frequently asked questions
- Is there a current extradition treaty between Spain and Colombia? Yes: the Convention of July 23, 1892, amended by the Protocol of March 16, 1999, supplemented procedurally by Law 4/1985 on Passive Extradition.
- Can Spain extradite a Spanish citizen to Colombia? Spanish nationality is a non-automatic ground for refusal; its rejection must be expressly motivated. If surrender is denied for this reason, Spain may assume the prosecution of the same facts.
- Is a formal accusation (indictment) by the Colombian Prosecutor's Office sufficient for extradition? Following STC 147/2020, no, when the judicial coverage for the deprivation of liberty required by the treaty has disappeared. The analysis is case-by-case and always depends on the specific instrument submitted.
- Can an extradition be appealed before the Supreme Court? Not in passive extradition. The appropriate route is an appeal before the Plenary of the Criminal Division of the National Court and, where applicable, an amparo appeal before the Constitutional Court.
- How long does an extradition procedure with Colombia take? Usually between several months and more than a year, depending on its complexity, not counting a potential writ of amparo. The initial phase—detention and precautionary measures—is the most decisive for the requested person's personal situation and requires the fastest legal response.
Conclusion
Extradition between Spain and Colombia is being decided today in a demanding triangle: an 1892 treaty, an accusatory-style Colombian criminal proceeding, and a Spanish constitutional doctrine that requires the courts to exercise substantive—not merely formal—scrutiny of the extradition request and the guaranteed protections. That triangle offers real defense opportunities to anyone who understands it in depth, and severe risks to anyone who underestimates it or approaches it with generalities.
In procedures of this nature, simultaneous coordination between the Spanish jurisdiction and the originating case file is usually decisive in order to build, from the very beginning, a solid and documentarily verifiable defensive strategy.
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VENFORT By Aldana & Abogados · Madrid · Caracas · Presence in 15 jurisdictions
International Criminal Defense · Extraditions · INTERPOL · Sanctions · Corporate Lawfare
Founding partner and Director of the International Criminal Law Department at VENFORT Lawyers. Lawyer accredited before the International Criminal Court, with over twenty years of practice in extraditions, INTERPOL proceedings, economic criminal law, and international sanctions, assists entrepreneurs, executives, institutions, and families with interests in Europe and the Americas.
