Section 2. Sources of the Rights of Criminal Procedure
(3) The norms of the criminal procedure of another countrystate may be applied only in international co-operation on the basis of a reasoned request frommotivated by a foreign countrystate, if such request is not in contradiction to the basic principles of the criminal procedure of Latvia.

Section 5. Application of the Law in International Co-operation
The legal norm of a foreign country indicated in a reasoned request from the foreign country may be applied in international co-operation without additional examining its validity.

Section 673. Types of International Co-operation

(2) Criminal-legal co-operation with international courts and with courts and tribunals established by international organisations (hereinafter - the international court) shall provide for the transfer of persons to international courts, for procedural assistance for such courts, and for the execution of the rulings of international courts.