After admitting to having a relationship with a former employee, Toronto's mayor abruptly announced his resignation.
The Toronto Star newspaper reported that John Tory had an affair with the 31-year-old woman, who he did not name, shortly before he made his announcement.
The relationship, he claimed, "ended mutually by consent this year" and began during the Covid-19 pandemic.
The 68-year-old described the romance as "a grave error in judgment.
In a statement, Mr. Tory said: "I am deeply sorry and I sincerely apologize to the people of Toronto and to everyone I have hurt.
In particular, he said, "I apologise to my wife Barb and to my family, whom I have let down more than anyone else.".
Mr. Tory promised to work with city workers and deputy mayor Jennifer McKelvie to ensure a smooth transition to a new leadership.
He continued, "I deeply regret having to leave a job I adore in a city I adore even more.
"I know in my heart that it is best for me to fully dedicate myself to the work needed to mend these most crucial (family) relationships as well.
After winning the election over Doug Ford and Olivia Chow, he took office in December 2014.
In 2018, Mr. Tory won re-election, and four years later he was sworn in for a third term.
To choose Mr. Tory's chosen successor, a by-election will be held later.
