The fact that a person is wanted under an EAW will be notified to other countries’ police and border authorities via an electronic alert. There are two systems used for this purpose: the 2nd Generation Schengen Information System (“SIS II”) and the databases of the International Criminal Police Organization (“INTERPOL”).
In each case, there are actions you should take in relation to the alert, either prior to the arrest, or after the conclusion of the EAW proceedings.