Extradition requests are typically confidential until a provisional arrest occurs. There is no public registry where you can look them up. The only way to detect an extradition request in advance is a layered legal audit — querying Interpol diffusions via the CCF, SIS II alerts via a national SIRENE bureau, and bilateral mutual Legal Assistance channels through the requested state's Ministry of Justice. Counsel conducts each query under privilege.
The problem is structural. An extradition request is transmitted through diplomatic or judicial channels between two states, and it is not published. If the requesting country also circulates an Interpol diffusion or a non-public Red Notice, the request becomes operationally visible at border systems — but only to police, not to the subject. By the time most people learn that an extradition request exists, they are already in custody. Early detection through counsel is the only alternative.
How Extradition Requests Are Transmitted
An extradition request typically follows a two-stage process. First, the requesting country asks the requested state to provisionally arrest the subject — often through an Interpol diffusion or a direct diplomatic note. Second, the formal extradition request, with supporting documentation, is transmitted through diplomatic channels. In Europe, the European Arrest Warrant (EAW) streamlines this process among member states, replacing diplomatic transmission with a direct judicial-to-judicial procedure.
The speed varies. Between EU member states, an EAW can be issued and executed within days. Between a non-EU requesting country and a European requested state, the process takes longer but the provisional arrest can still occur rapidly if a diffusion has been circulated. The subject typically has no formal notice until the arrest happens.
This is why detection matters. An extradition request that has been filed but not yet acted upon leaves limited footprints, but the surrounding instruments — diffusions, SIS II alerts, diplomatic notes — can be detected through the correct legal channels. A clean public Interpol search reveals none of this.
Critical Warning for Travelers
An extradition request can be active without any Interpol notice. Between EU states, an EAW circulates in SIS II and triggers detention at any Schengen border. If you suspect a foreign prosecution may have escalated, a SIS II query is as important as an Interpol check — and neither is available through any public channel.
The Three-Channel Detection Audit
A counsel-led audit queries the three channels through which an extradition request leaves detectable footprints. Each covers a different layer, and together they provide the most comprehensive answer available.
- Interpol (CCF request): Counsel files a CCF access request asking whether any diffusion, Red Notice, or data record exists in your name. A diffusion is the most common instrument used to request provisional arrest across borders, and it is detectable only through the Commission.
- European layer (SIS II / SIRENE): A data-access request to your national SIRENE bureau reveals whether a European Arrest Warrant or discreet alert exists in SIS II. This is independent of Interpol and covers intra-EU extradition.
- Bilateral channel (MLA enquiry): Where a specific requesting country is suspected, counsel assesses whether a mutual legal assistance request or diplomatic note has been transmitted to the requested state's Ministry of Justice. This is the least transparent layer, but in some jurisdictions partial disclosure is possible.
What to Do If a Request Is Detected
If the audit reveals that a provisional arrest instrument is active — a diffusion, an EAW, or an Interpol notice — the immediate priority is to prevent detention. Where the instrument is non-compliant with Interpol's rules or with human-rights standards, counsel can file a CCF deletion petition with a request for provisional measures, temporarily blocking the alert's dissemination while the challenge is pending. In European extradition cases, bail and legal representation in the requested state can be arranged in advance.
In one case, a client's audit revealed an EAW in SIS II based on a prosecution that had already been dismissed in the issuing country. The SIS II alert had not been withdrawn. Counsel obtained confirmation of the dismissal from the issuing court, filed a challenge with the requested state's extradition authority, and the alert was removed before any travel occurred.
The Diplomatic Channel's Opacity
Extradition requests transmitted through diplomatic channels are among the most opaque legal instruments in international law. Unlike Interpol diffusions, which leave a footprint in I-24/7, and EAWs, which leave a footprint in SIS II, a diplomatic-note-based extradition request may leave no detectable footprint until a provisional arrest warrant is issued. The requesting state transmits the request to the requested state's Ministry of Foreign Affairs, which forwards it to the Ministry of Justice, which instructs law enforcement to execute the arrest. The subject has no notice until the arrest occurs.
This opacity means that the most dangerous extradition requests — those from non-treaty states transmitted through diplomatic channels — are also the hardest to detect. A CCF access request can detect an Interpol diffusion that accompanied the request, but where no diffusion was circulated, the CCF response will be clean. The bilateral MLA enquiry, where possible, is the only channel that can detect diplomatic-note-based requests, and even it is limited by the requested state's willingness to disclose.
What to Do in Practice: Secure Your Clearance
If you suspect an extradition request may exist — a foreign prosecution, a contested business matter, or a political change in your country of origin — the only way to detect it in advance is a three-channel audit filed before travel. A public search will not help. The cost of the audit is modest compared to the cost of discovering the request at a border terminal.
If you suspect your name is on an international watchlist or have an upcoming flight, do not leave your freedom to chance at a passport terminal. A confidential Interpol lookup or a comprehensive Pre-Travel Legal Check filed through Swiss legal counsel secures absolute clarity within days. Contact our Basel office confidentially to secure your legal travel shield.