Democratic gubernatorial candidate Gretchen Whitmer's campaign manager has resigned over a report of previous inappropriate behavior in the workplace.

In a brief statement sent to media Thursday afternoon, Whitmer said she asked for and received the resignation of campaign manager Keenan Pontoni after hearing a "credible" report of past misconduct.

"Yesterday, I received a credible report that a number of years ago, my campaign manager engaged in inappropriate behavior with people in the workplace and for that reason I have asked for and received his resignation effective immediately," the statement read.

No further details regarding the situation were provided.

Pontoni was hired in August by the Whitmer campaign to replace Jerid Kurtz as campaign manager. Prior to that, he worked on the special election campaign of Jon Ossoff for Congress in Georgia as well as several Michigan campaigns.

Whitmer is running against Shri Thanedar, Abdul El-Sayed and Bill Cobbs in the Democratic primary for Michigan governor.