INTERPOL is the intergovernmental organisation that facilitates international police co-operation. It is responsible, amongst other things, for circulating international alerts (known as “notices”) to communicate information relating to criminal activity from one police force to their counterparts around the world.

There are eight types of notice. In summary, they are:

  1. Red Notice– To seek the location and arrest of a person wanted by a judicial jurisdiction or an international tribunal with a view to his/her extradition.
  2. Blue Notice– To collect additional information about a person’s identity, location or activities in relation to a crime.
  3. Green Notice– To provide warnings and intelligence about persons who have committed criminal offences and are likely to repeat these crimes in other countries.
  4. Yellow Notice– To help locate missing persons, often minors, or to help identify persons who are unable to identify themselves.
  5. Black Notice– To seek information on unidentified bodies.
  6. Orange Notice-To warn of an event, a person, an object or a process representing a serious and imminent threat to public safety.
  7. Purple Notice– To seek or provide information on modus operandi, objects, devices and concealment methods used by criminals.
  8. INTERPOL-United Nations Security Council Special Notice– Issued for groups and individuals who are the targets of UN Security Council Sanctions Committees.

A summary of other Notices used by INTERPOL is available here.