At least two people were injured and two were in police custody on Monday after police announced that gunshots were ringing near the Toronto Raptors' parade and victory.
Raptors fans stormed the streets of downtown Toronto to celebrate the new NBA champions.
The Toronto police tweeted that she "had located two victims" and that her injuries were serious but did not put her life in danger. They also stated that two people were in detention and that two firearms were recovered.
Witnesses showed photos and videos of "chaos" and uncertainty after the shots. Some were seen hiding or hiding behind everything they could find, including cars. The large crowd would have caused delays in the rally, which was to end earlier in the afternoon.
"I'm on the roof of City Hall and something is happening. People are running, including what appears to be cops and security, "Jennifer Pagliaro tweeted.
Francine Kopun tweeted a video of runners and wrote: "Shots were fired at Nathan Phillips Square. This is shot on the north side of City Hall. "
Supporters in the crowd were urged to remain calm and politicians, including Prime Minister Justin Trudeau, Ontario Premier Doug Ford and Mayor John Tory remained on the scene, Global News reported.
Nathan Phillips Square is City Hall Square in Toronto. It is close to major business and commercial centers, as well as the University of Toronto.
This is a story in development. Come back for updates.