Article 25 3.

Inspections shall be conducted in compliance with the national law of the Member State in which the inspection is carried out and after prior warning has been given to the company, except where prior warning would hinder the effectiveness of the inspection. Where, as part of its investigation, a supervisory authority wishes to carry out an inspection on the territory of a Member State other than its own, it shall seek assistance from the supervisory authority in that Member State pursuant to Article 28(3).