How Interpol Works: A Complete Guide to the Global Police Network

The International Criminal Police Organization (ICPO) — commonly known as Interpol — was founded in 1923 and today counts 196 member countries. Its General Secretariat is headquartered in Lyon, France, with a Global Complex for Innovation in Singapore and several regional bureaus worldwide. A widespread misconception frames Interpol as a supranational police force capable of conducting independent operations or making arrests. In reality, the organization functions as a coordination hub: it maintains shared databases, issues international notices, and facilitates real-time communication between national law enforcement agencies. Understanding how Interpol works begins with recognizing what it is not — and what makes it indispensable precisely because of those constraints.

Interpol’s operational architecture rests on three pillars: the General Secretariat in Lyon, National Central Bureaus (NCBs) in each member country, and the secure I-24/7 communications network connecting them. Governance is handled by the General Assembly — the supreme decision-making body that convenes annually — the Executive Committee, which oversees the implementation of Assembly decisions, and the Secretary General, who directs day-to-day operations of the Secretariat. The Command and Coordination Centre (CCC) operates around the clock, providing immediate support during active international incidents regardless of time zone.

Every member country designates a National Central Bureau — a dedicated unit within its own police or law enforcement structure — as its official point of contact with Interpol. The NCB acts as the gateway between domestic policing and the global network. It receives and transmits requests for assistance, processes incoming notices, and coordinates the response when another member state requests action. Critically, NCBs operate strictly under national law: no arrest can be made without the legal authority of the host country, and no Interpol official participates in enforcement actions. This is the structural reason why Interpol has no agents with the power of arrest — the organization simply has no such personnel.

I-24/7 is Interpol’s encrypted global telecommunications network, through which law enforcement agencies in all 196 member countries exchange operational data in real time. The system provides secure access to Interpol’s central databases — wanted persons records, stolen travel documents, biometric profiles, and more. All transmissions are encrypted, and access is tiered according to authorization levels. In practical terms, I-24/7 allows a border officer anywhere in the world to run a passport or fingerprint check against global records within seconds — making it the technical backbone of how Interpol operates on a daily basis.

Interpol’s databases are its most operationally significant asset. Member countries contribute data continuously, and access through I-24/7 is available to authorized law enforcement personnel at any hour. The principal databases include:

Together, these databases give national police forces a level of situational awareness that would be impossible to achieve through bilateral information-sharing agreements alone.

Notices are official communications issued by Interpol’s General Secretariat — at the request of a member country or Interpol itself — and distributed to law enforcement worldwide. Each notice is color-coded according to its purpose:

In addition to formal notices, member countries may use Diffusions — direct, less formalized requests sent through I-24/7 to one or more specific countries without going through the full Secretariat approval cycle. Diffusions offer speed and flexibility for time-sensitive operational situations.

The Red Notice is the most widely recognized instrument in Interpol’s toolkit — and the most frequently misunderstood. It is a formal request to law enforcement agencies worldwide to locate a named individual and provisionally arrest them pending extradition or surrender to the requesting country. A Red Notice is not an international arrest warrant. It carries no binding legal force: whether to detain the subject depends entirely on the domestic laws of the country where the person is found and any applicable extradition treaties between the states involved. The arrest, when it occurs, is made by local police — never by Interpol personnel. Once detained, the subject enters a standard extradition process through the courts of the country of arrest.

Key distinction: A Red Notice requests action. Only a national court and the relevant bilateral treaty can compel it.

Interpol concentrates its resources on three primary threat areas that by their nature exceed the reach of any single national police force:

The organization’s constitutional limits are equally important to understanding its function. Article 3 of Interpol’s Constitution explicitly prohibits any intervention or activity of a political, military, religious, or racial character. This provision exists to prevent member states from using the organization’s mechanisms against political opponents or dissidents. Notices issued in violation of Article 3 can be challenged before the Commission for the Control of INTERPOL’s Files (CCF) — an independent oversight body that reviews complaints and has authority to order the deletion of unlawfully issued notices. Individuals who believe a Red Notice against them was politically motivated may file a request directly with the CCF through Interpol’s official website at interpol.int.

Interpol is frequently conflated with Europol or national agencies such as the FBI. The three operate under fundamentally different mandates:

In brief: Interpol is a global data-sharing and coordination framework with no enforcement powers of its own; Europol is an EU-level analytical and operational support body, also without arrest authority; the FBI is a domestic federal agency with full investigative and arrest powers within U.S. jurisdiction. The three can and do collaborate on cross-border cases, but their legal authorities do not overlap.

Interpol’s power lies not in badges or firearms, but in architecture — the infrastructure of trust, communication, and shared data that allows 196 police forces to act on a common picture of transnational crime. Without the I-24/7 network, the SLTD database, and the notice system, national agencies would operate in isolation, unable to track criminals who exploit jurisdictional gaps as a deliberate strategy. At the same time, Article 3 and the CCF oversight mechanism are essential safeguards ensuring this global reach cannot be turned into a political instrument. Understanding both dimensions — the operational capacity and the legal constraints — is the foundation for accurately assessing how Interpol works, and what it can and cannot do.