Writ petition argues Maryam made remarks against apex court, judiciary in Sargodha speech
Poll supervisor gives last chance to Imran, others in contempt proceedings
Court serves notices to former PM, 13 others including minister and Pemra chairman
Petitioner also seeks contempt proceedings against former PM for his "anti-judiciary" remarks
Top poll supervisory body directs PTI chief to reply to contempt petition against him by August 23
The ombudsperson said she regretted her actions in the matter
Advocate general report finds Dr Riaz deliberately missed an earlier hearing