(72)A set of effective tools and powers and resources for the competent authorities of Member States guarantees supervisory effectiveness. This Regulation should therefore in particular provide for a minimum set of supervisory and investigative powers with which competent authorities of Member States should be entrusted in accordance with national law. Those powers should be exercised, where the national law so requires, by application to the competent judicial authorities. When exercising their powers under this Regulation, competent authorities and ESMA should act objectively and impartially and remain autonomous in their decision-making.