Toronto's mayor has faced angry protesters - and mounting calls to quit - as he arrived for work a day after he admitted smoking crack cocaine.
One of Mayor Rob Ford's veteran policy aides resigned on Wednesday, the latest in a string of defections since May.
Meanwhile, even Mr Ford's allies on the city council say they have lost confidence in him.
Officials in Canada's largest city cannot legally remove Mr Ford unless he is convicted of a crime.
More than 200 chanting demonstrators were gathered outside city hall as Mr Ford arrived for work shortly after midday on Wednesday. He entered his office via a back stairway.