Former Pakistan Prime Minister Imran Khan, who was imprisoned in connection with the Toshakhana case recently, on Tuesday appealed his conviction and sentencing by a trial court, claiming that the verdict was passed by a ‘biased’ judge and it was “a gross travesty of justice”.Former Pakistan Prime Minister Imran Khan, who was imprisoned in connection with the Toshakhana case recently, on Tuesday appealed his conviction and sentencing by a trial court, claiming that the verdict was passed by a ‘biased’ judge and it was “a gross travesty of justice”.