Transiting through Europe with an old foreign case is risky if the matter was ever circulated as an Interpol diffusion or SIS II alert. Old cases can remain active in databases long after local proceedings have concluded, because the requesting country does not always notify Interpol or SIS II when a case is closed. A pre-travel audit is essential before any European transit.
The assumption that an old case is "finished" because it was resolved locally is one of the most dangerous misconceptions we encounter. A case may have been dismissed, settled, or time-barred in the issuing country, but if an Interpol diffusion or SIS II alert was circulated during the active phase of the investigation, it may still be live in the database. The requesting country's failure to withdraw the alert does not invalidate it at the border — the terminal queries the database as it exists, not as it should be.
Why Old Cases Persist in Databases
Interpol retains data for 5 years by default, subject to review. If the requesting country does not notify Interpol that the case has been resolved, the data remains active. The same applies to SIS II: if the issuing Schengen state does not withdraw the alert, it persists. The data lag between local resolution and international withdrawal is a well-documented problem.
In some cases, the requesting country actively refuses to withdraw the alert, even after a local acquittal, because it disagrees with the outcome or intends to appeal. In others, the withdrawal is simply neglected — bureaucratic inertia in the issuing country's prosecutor's office or NCB. Either way, the subject is unaware that an alert they believed was resolved is still live.
The practical consequence is that a person who resolved a case years ago can be detained at a Schengen border on an alert that should have been withdrawn. This is particularly common in financial-crime cases from Eastern Europe, Russia, and the GCC, where local proceedings may have concluded but the international alert was never cleared.
Critical Warning for Travelers
An old case that was resolved locally is not necessarily resolved internationally. If a diffusion or SIS II alert was circulated, it may still be active. Do not assume that a local acquittal or dismissal has been communicated to Interpol or SIS II — verify it.
How to Check Whether an Old Case Is Still Active
A counsel-led audit queries both Interpol and SIS II to determine whether any alert from the old case is still live. If it is, the audit identifies the type, the requesting country, and the underlying charge, enabling a deletion or correction request.
- CCF access request: Counsel files a request asking whether any notice, diffusion, or data record exists in your name. If data exists from the old case, the Commission discloses its type and origin.
- SIRENE data-access request: A request to your national SIRENE bureau reveals whether any SIS II alert — EAW or discreet surveillance — persists from the old case.
- Deletion or correction petition: If an alert is found, counsel prepares a deletion petition citing the local resolution (acquittal, dismissal, settlement) and arguing that the data is no longer compliant with Interpol's rules or SIS II regulations.
Resolving the Data Lag
If the audit reveals that an alert from a resolved case is still active, the resolution depends on the system. For Interpol data, a CCF deletion petition citing the local acquittal or dismissal can force deletion. The Commission reviews the underlying proceedings and, where the data is no longer justified, orders deletion. For SIS II data, a correction request to the issuing SIRENE bureau, supported by evidence of the local resolution, can force withdrawal.
In one case, a client had been acquitted of a financial-crime charge in an Eastern European country three years earlier. The acquittal was final, but the Interpol diffusion circulated during the investigation had never been withdrawn. The client was detained at Frankfurt airport during a family holiday. A CCF deletion petition, filed after the detention, secured deletion within four months. Had a pre-travel audit been filed before the flight, the alert would have been identified and the detention avoided.
The Resolution Gap Between Local and International
The resolution gap — the period between the local resolution of a case and the international withdrawal of the corresponding alert — is a well-documented structural problem. Interpol's Rules on the Processing of Data require the requesting country to notify the General Secretariat when the basis for a notice has ceased. In practice, this notification is frequently delayed, neglected, or never sent. The requesting country's NCB may be unaware of the local resolution, the prosecutor may have moved to another case, or the bureaucratic process of notification may simply stall.
The gap can last months or years. During this period, the alert remains active at borders, and the subject — who believes the matter is resolved — can be detained. The CCF deletion petition is the remedy: it forces the Commission to review the data, and if the underlying case has been resolved, the Commission orders deletion regardless of whether the requesting country has notified Interpol. The petition is the mechanism that closes the resolution gap, and it should be filed as soon as the local resolution is confirmed.
What to Do in Practice: Secure Your Clearance
If you have an old foreign case — even one that was resolved years ago — do not assume it has been cleared internationally. A pre-travel audit through counsel queries Interpol and SIS II before you fly. If an alert persists, a deletion petition can remove it. The alternative is discovering it at a border, which is the most disruptive way to learn it.
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.