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