The judge due to hear the treason trial of Uganda's opposition leader has withdrawn from the case, saying there was a perception he would be biased. Judge John Bosco Katutsi described the view as "absolute rubbish" but said a judge should be above suspicion. He said he had had sleepless nights and his health had suffered. He is the second judge to withdraw from a case concerning Kizza Besigye - expected to be the strongest challenger in elections due on 23 February.