1.   In order to carry out the tasks conferred on it by this Regulation, and subject to other conditions set out in relevant Union law, the ECB may in accordance with Article 13 and subject to prior notification to the national competent authority concerned conduct all necessary on-site inspections at the business premises of the legal persons referred to in Article 10(1) and any other undertaking included in supervision on a consolidated basis where the ECB is the consolidating supervisor in accordance with point (g) of Article 4(1). Where the proper conduct and efficiency of the inspection so require, the ECB may carry out the on-site inspection without prior announcement to those legal persons.

2.   The officials of and other persons authorised by the ECB to conduct an on-site inspection may enter any business premises and land of the legal persons subject to an investigation decision adopted by the ECB and shall have all the powers stipulated in Article 11(1).

3.   The legal persons referred to in Article 10(1) shall be subject to on-site inspections on the basis of a decision of the ECB.

4.   Officials and other accompanying persons authorised or appointed by the national competent authority of the Member State where the inspection is to be conducted shall, under the supervision and coordination of the ECB, actively assist the officials of and other persons authorised by the ECB. To that end, they shall enjoy the powers set out in paragraph 2. Officials of the national competent authority of the participating Member State concerned shall also have the right to participate in the on-site inspections.

5.   Where the officials of and other accompanying persons authorised or appointed by the ECB find that a person opposes an inspection ordered pursuant to this Article, the national competent authority of the participating Member State concerned shall afford them the necessary assistance in accordance with national law. To the extent necessary for the inspection, this assistance shall include the sealing of any business premises and books or records. Where that power is not available to the national competent authority concerned, it shall use its powers to request the necessary assistance of other national authorities.