Interpol Red Notice

An Interpol notice is an international alert circulated by Interpol to communicate information about crimes, criminals, and threats from police in a member state (or an authorised international entity) to their counterparts around the world. The information disseminated via notices concerns individuals wanted for serious crimes, missing persons, unidentified bodies, possible threats, prison escapes, and criminals' modus operandi.

There are eight types of notices, seven of which are colour-coded by their function: Red, Blue, Green, Yellow, Black, Orange, and Purple. The most well-known notice is the Red Notice which is the "closest instrument to an international arrest warrant in use today." An eighth Special Notice is issued at the request of the United Nations Security Council.

Notices published by Interpol are made either on the organisation's own initiative or are based on requests from its member states' National Central Bureaus (NCBs) or authorised international entities such as the United Nations and the International Criminal Court. All notices are published on Interpol's secure website. Extracts of notices may also be published on Interpol's public website if the requesting entity agrees.

Interpol can only publish a notice that adheres to all the proper legal conditions. For example, a notice will not be published if it violates Interpol's constitution, which forbids the organisation from undertaking activities of a political, military, religious, or racial character. Interpol can refuse to publish a notice that it considers inadvisable or a potential risk.

Notices can be issued in any of the four official languages of Interpol: English, French, Spanish, and Arabic.

Similar to the Notice is another request for cooperation or alert mechanism known as a 'diffusion'. This is less formal than a notice but is also used to request the arrest or location of an individual or additional information in relation to a police investigation. A diffusion is circulated directly by a member states or international entity to the countries of their choice, or to the entire Interpol membership and is simultaneously recorded in Interpol’s databases.

...
Wikipedia