Part I
General
CHAPTER I
Subject-matter, scope and general principles of international judicial co-operation in criminal matters
Article 15
Concurrent requests
1. If, for the same or for different facts, international co-operation is requested by two or more States, co-operation shall be afforded to the State that, in view of the circumstances of the case, might better safeguard both the interests of justice and the interests of the social rehabilitation of the suspect, the accused or the sentenced person.
2. The provisions of the preceding paragraph:
a) in the cases covered by Article 1.2, shall cede against the rule according to which international jurisdiction shall have primacy over national jurisdiction;
EDIT.