ST. PAUL, Minn. -

The state's legislative auditor says he's investigating the use of two luxury suites in the new Minnesota Vikings stadium by top public officials.

A pair of Minnesota Sports Facility Authority officials controls access to two lower-level suites for all football games and other events. Neither Authority chairwoman Michelle Kelm-Helgen nor executive director Ted Mondale would identify previous guests except 12 public officials who have reimbursed the state for game tickets.

Legislative Auditor Jim Nobles told the Star Tribune Wednesday he's launching a "priority" investigation that he hopes to complete in January.

Kelm-Helgen and Mondale defend the suite access as useful to woo new business to the stadium. Republican Sen. Julie Rosen says their control of two suites is unaccountable and unnecessary.