A subpoena for Governor Scott Walker's testimony in an upcoming criminal trial of one of his former aides has been submitted to a Milwaukee County court.
Clerk Gina Barron for Judge David Hanscher tells WXOW's sister station WKOW that the subpoena was submitted to the court Friday.
Barron says the subpoena documents show the subpoena was served on Walker's attorney, Michael Steinle.
Steinle has yet to return a call from 27 News seeking comment.
Walker was previously identified by a prosecutor as a potential witness in the October 15 trial of Kelly Rindfleisch in Hanscher's court.
Authorities say Rindfleisch committed misconduct by working on campaign activities in 2010, while at her government job as deputy chief of staff for Walker when Walker was Milwaukee County executive.
Authorities say Rindfleisch exchanged dozens of emails with others on behalf of the campaign of lieutenant governor candidate Brett Davis, who is now state medicaid director under Walker.
Authorities also say Rindfleisch used a secret email system, with records of emails unknown to county custodians of such records.
Rindfleish's attorney, Franklyn Gimbel, and assistant Milwaukee County District Attorney Bruce Landgraf have yet to return calls from 27 News seeking comment on the subpoena served on Walker's attorney for the governor's court appearance to testify.