A young woman is dead and 13 other people have been injured after a mass shooting on The Danforth Sunday night.
At a press briefing confirming the shooting police said, "There was an exchange of gunfire".
The condition of the other victims is not known yet.
The police said they had responded to a call at around 10pm (0200 GMT Monday) in the city's Greektown district, which has many popular restaurants, cafes and shops.
Frank Gunn/Canadian Press Police work at the scene of a mass casualty incident in Toronto on July 22, 2018.
There are several shooting scenes detectives are processing. It is unclear if the suspect was hit by police fire.
Gunfire erupted in the area of Danforth and Logan avenues at around 10 p.m.
Police at the scene of the shooting
A young girl is in a critical condition, Toronto Police Chief Mark Saunders said. "I know it's not gangs tonight, but it is guns tonight".
"We just ran. We saw people starting to run so we just ran", he said. The user tweeted, "So scary!"
Toronto is grappling with a sharp rise in gun violence this year.
When asked about the suspect, Saunders said they knew "nothing at this point in time".
Dozens of police officers, firefighters and paramedics are at the scene.
The 19-year-old said the shooter stood outside on the sidewalk, but didn't appear to be using a rifle. "We are looking at all possible motives. and not closing any doors", police told reporters at the site of the shooting. "I certainly want to find out exactly what it is, so I'm not closing any doors or any chapters on this and I certainly don't want to speculate as well".
"We still live in a great city, but we have to be ever more vigilant about these kind of things", Mayor John Tory said.
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