Police chief Mark Saunders confirmed the alleged shooter is dead adding that there was an exchange of gunfire with officers. Toronto police tweeted saying he shooter has been killed.
Councillor Mary Fragedakis also said she heard the gunman was disturbed.
Emergency crews rushed to the scene in Toronto's Greektown neighbourhood near Danforth and Pape Avenues around 10pm on Sunday night.
Thirteen people are in hospital, including a nine-year-old girl who is in critical condition, said police.
Police, paramedics and firefighters converged on the scene in the area of Danforth and Logan avenues, in Toronto's east end.
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Delattre said it was important to avoid "any premature signal of a loosening of sanctions that would be a counter-message". The sanctions committee has what it needs.
Saunders issued an appeal to Toronto residents who may have information on the shooting.
Victims are spread across many blocks.
There are at least nine casualties - including children - after the shooting in the Canadian city of Toronto.
Another witness told CTV he estimated the gunman fired about 20 shots.
"I heard shots followed by sirens a couple of minutes later near Chester station", Zaid Zawaideh said on Twitter.
At the start of Monday's business day, tips from witnesses should be directed to Toronto Police's hotline at 416-808-5504. "So scary! The gun violence in Toronto is insane".