Dane County District Attorney Ismael Ozanne announced Monday that he is asking that a special prosecutor be named to review a report prepared by the Dane County Sheriff’s Office into a June 13 altercation between state Supreme Court Justices David Prosser and Ann Walsh Bradley.

The Wisconsin Judicial Commission and the Dane County’s Sheriff’s Office announced Monday that they are conducting separate ethical and criminal investigations into an alleged physical altercation between two Wisconsin Supreme Court justices.

Several sources told Wisconsin Public Radio and the Wisconsin Center for Investigative Journalism that an argument before the court’s release of a decision upholding a bill to curtail the collective bargaining rights of public employees culminated in a physical altercation in the presence of other justices.