The conservative chief justice of the Wisconsin Supreme Court on Monday told the new liberal majority in a scathing email that they had staged a “coup” and conducted an “illegal experiment” when they voted to weaken her powers and fire the director of state courts.

Chief Justice Annette Ziegler, in two emails obtained by The Associated Press, said that firing and hiring a new state court director was illegal and ordered interim state court director Audrey Skwierawski to stop signing orders without her knowledge or approval.