Minn. Stat. § 297G.13

The commissioner of public safety or the commissioner of revenue, or their duly authorized employees, may, at any reasonable time, without notice and without a search warrant, enter in and upon a licensed premises, and examine the books, papers, and records of a brewer, manufacturer, wholesaler, or retailer for the purpose of determining whether the excise tax has been paid, and may in addition inspect any premises where fermented malt beverages are manufactured, sold, offered for sale, possessed, or stored for the purpose of determining whether the party is in full compliance with the provisions of this chapter.