Shots rang out at the Canadian professional basketball team's victory parade Monday, scattering the crowd of tens of thousands celebrating the Toronto Raptors NBA championship victory.
Toronto police said two people suffered serious but not life-threatening injuries and two people were arrested.
Prime Minister Justin Trudeau was among the guests at the celebration in front of City Hall, which continued despite the shooting.
Earlier in the day, Mayor John Tory urged every resident to come celebrate the Raptors' first championship and declared this "We The North Day" in Toronto, after the franchise's slogan.
Some 1.5 million fans attended the parade.
The Raptors beat the Golden State Warriors 114-110 in Game 6 of the NBA Finals to win the first championship in team's 24-year history.