Dunedin ratepayers are shocked by the resignation of deputy mayor Sophie Barker, who says it was untenable to stay in the role. She says the breach of a confidential council meeting last month was the last straw, but pressure had been building following a series of off the cuff comments in interviews by mayor Jules Radich. Late last week, she and councillor Jim O'Malley filed a Code of Conduct complaint against the mayor. Tess Brunton is in Dunedin and filed this report. Dunedin City Council says under its Code of Conduct, the chief executive is required to forward the complaint against the Mayor to an independent investigator. They will conduct a preliminary assessment to determine if a material breach has occurred and if a full investigation is required.