MINNEAPOLIS (WCCO) — Minnesota Senate Majority Leader Amy Koch resigned her post Thursday after she was confronted by GOP Senate leaders about allegations of an inappropriate relationship with a Senate staffer, according to high level State Capitol sources.

READ MORE: Man Fatally Shot On Downtown St. Paul LRT Platform; 2 Others Killed In Separate Shootings

Those sources confirmed that four Republican Senators held an emergency meeting with Koch Wednesday night, after multiple Senate staffers reported the possible improper conduct.

“Not fun, but we did what I think all of us feel is necessary and appropriate give the circumstances,” said Assistant Majority Leader Sen. Dave Senjem

GOP leaders won’t name the male staffer alleged to be involved with Senator Koch, but said he continues to work at the Senate. Because it is now a legal matter, they’ve turned over the complaints to the Secretary of the Senate for review.

READ MORE: Jackie Young Scores 25 For Aces In 93-87 Win Over Lynx

“We don’t want the Minnesota senate to have that kind of work environment for our employees,” said Deputy Majority Leader Sen. Geoff Michel. “And so that’s why we felt we had to act.”

In a letter to Senate Republicans Thursday, Koch resigned as Senate Majority Leader and said she will not run for re-election next year.

In her letter, Koch wrote: “We cannot afford a lame duck leader in negotiations next session, which is why I am resigning my position as Majority Leader.”

MORE NEWS: Survey: Average American Eats 4 Salads A Week

Koch did not immediately return a call for comment.