The commissioner may subpoena, administer oaths to, and examine under oath, the parties and witnesses to any transaction between the state and a person, partnership, or corporation.
Minn. Stat. § 16A.44
(72) 1917 c 498 s 2; 1955 c 863 s 7; 1973 c 492 s 14; 1984 c 628 art 2 s 1