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INTERPOL Notices: Facilitating International Cooperation in Law Enforcement

INTERPOL Notices serve as vital tools for global law enforcement agencies to exchange critical crime-related information and cooperate on investigations. These notices, issued by the General Secretariat at the request of member countries or international bodies, enable the dissemination of alerts and requests for information worldwide, enhancing efforts to combat crime on an international scale.

Understanding INTERPOL Notices

INTERPOL Notices come in various types, each serving a specific purpose in law enforcement efforts:

  • Red Notice: Issued to seek the location and arrest of persons wanted for prosecution or to serve a sentence.
  • Yellow Notice: Aimed at locating missing persons, often minors, or identifying individuals unable to identify themselves.
  • Blue Notice: Used to gather additional information about a person’s identity, location, or activities in relation to a criminal investigation.
  • Black Notice: Employed to obtain information on unidentified bodies.
  • Green Notice: Provides warnings about a person’s criminal activities, posing a potential threat to public safety.
  • Orange Notice: Warns of events, individuals, objects, or processes representing serious and imminent threats to public safety.
  • Purple Notice: Seeks or provides information on the modus operandi, objects, devices, and concealment methods used by criminals.
  • INTERPOL–United Nations Security Council Special Notice: Issued for entities and individuals targeted by UN Security Council Sanctions Committees.

Ensuring Compliance and Legality

INTERPOL maintains strict criteria for issuing Notices to ensure their legality and quality, as well as the protection of personal data. Notices must comply with INTERPOL’s Constitution and Rules on the Processing of Data, preventing any intervention or activities of a political, military, religious, or racial nature.

A specialized task force, the Notices and Diffusions Task Force, comprising legal experts, police officers, and operational specialists, reviews requests for compliance with INTERPOL’s rules before publication. This rigorous process safeguards the integrity and effectiveness of INTERPOL Notices.

Diffusions: Another Mechanism for Cooperation

In addition to Notices, member countries can request cooperation through diffusions, circulated directly by a country’s National Central Bureau to other member countries. Diffusions mirror the color-coded system of Notices and must adhere to INTERPOL’s Constitution and Data Processing Rules.

Wanted persons (red) diffusions, aimed at arresting or detaining convicted or accused individuals, undergo thorough compliance checks by the Notices and Diffusions Task Force. Any diffusion contravening INTERPOL’s Constitution is promptly rejected to uphold the organization’s principles of neutrality and legality.


INTERPOL Notices play a crucial role in facilitating international cooperation among law enforcement agencies, enabling the swift exchange of critical information to combat transnational crime effectively. By adhering to strict criteria and review processes, INTERPOL ensures the integrity, legality, and effectiveness of its Notices, thereby strengthening global efforts to maintain public safety and security.

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