Similar to Red Notices, diffusions are issued for the same purposes as Red Notices but sent directly by a member country NCB or an international entity to the country of their choice, or to the entire INTERPOL membership. It is then recorded in INTERPOL’s Information System.
The main difference between a Red Notice and a Diffusion is that the latter is circulated through but not ‘by’ INTERPOL: the issuing country acts directly in order to seek the arrest of an individual in another country, and does not need approval from the General Secretariat to do so.
Diffusions contain information similar to that set out in Red Notices, and are frequently disseminated whilst the issuing member country awaits formal Red Notice approval. They can be challenged and removed in the same way as Red Notices.