The powers of this paragraph shall be exercised in compliance with the national law of the Member State or of the third country where the investigation takes place, with due regard for the rights and legitimate interests of persons concerned and in compliance with the principle of proportionality.
Lorsqu'une telle assistance est requise, l'Agence informe, en temps utile avant l'enquête, l'État membre sur le territoire duquel l'enquête doit être menée en précisant qu'une assistance est requise.