Mary Manney, assistant executive director for the Minnesota Racing Commission, resigned earlier this week, KSTP-TV reports.
Channel 5 says former Executive Director Richard Krueger retired last year under protest while there were three investigations happening within the racing commission at the same time. Krueger apparently expressed some doubts about his replacement, Mark Overton.
KSTP reports that an employee filed a discrimination complaint against Overton last year, but state officials have not yet released the findings.
Manney's attorney tells the station she has asked Gov. Mark Dayton to not reappoint Overton to a new term as chairman.
The Minnesota Racing Commission regulates horse and card gambling at Canterbury Park and Running Aces, which fills the state's coffers to the tune of about $100 million a year.