National Guard sponsored Panther Racing in 2013. (Photo: Getty Images)

National Guard sponsored in 2013. (Photo: Getty Images)

Panther Racing has sued , and others, saying it lost a $17.2 million sponsorship with the Army National Guard because of bid-rigging and other improprieties.

The lawsuit filed Feb. 19 in Marion County Court in Indianapolis follows a ruling earlier this year by the U.S. Government Accountability Office. The GAO denied Panther’s appeal of moving the Army National Guard sponsorship to ’s car for the upcoming IndyCar season.

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