Toronto police have taken into custody three people after responding to a shooting at Nathan Philips Square, during the Toronto Raptors' NBA Championship celebration.
Four people are being treated for non-life-threatening injuries, officials added.
An investigation is currently underway to determine the motive behind the attack, with authorities urging the public to send in footage to help them.
Two firearms were recovered following the arrests.
"I hope all those injured in today's shooting have a speedy recovery and I'd like to thank the Toronto Police for acting so quickly," Prime Minister Trudeau said on Twitter. "We won't let this act of violence take away from the spirit of today's parade."
Suspect shot dead after crashing truck into Detroit-area synagogue
Iran's supreme leader, in first remarks, vows to keep strait closed
One person dies after Virginia university shooting
Four Bahrainis arrested for spying for Iranian Guard
Two US sailors injured after non-combat fire aboard carrier in Red Sea
First train to Pyongyang in six years leaves Beijing as neighbours revive link
Six vessels attacked in Gulf, Strait of Hormuz
IEA announces record oil stockpile release over Iran war supply disruptions
