Amagistrate has been reprimanded after posting a Facebook message about a court case he had overseen.
David King, who sits in courts in Portsmouth, south-east Hampshire, was investigated by a watchdog after a complaint.
A Judicial Conduct Investigations Office spokesman said judicial heads had concluded that Mr King's behaviour "fell below the standard expected of a magistrate".
The spokesman said Mr King had been issued with a reprimand.
Detail has emerged in a statement posted on the Judicial Conduct Investigations Office website.
The statement gave no indication what Mr King's message had said.