Celebration has turned to panic in Toronto after a shooting during a parade for the champion Raptors team.
Millions filled the Canadian city's streets after the basketball team were crowned NBA champions.
Toronto Police say two people have been shot and have serious, but not life-threatening injuries.
Videos posted to social media show hundreds of people running in a panicked stampede at Nathan Phillip's Square.
Toronto's armed Emergency Task Force was on the scene.
Two people are in custody and two firearms have been recovered from the scene.
Prime Minister Justin Trudeau was among two million fans cheering the Raptors, as the basketball team paraded through the city to celebrate its first NBA championship, a win that has united Canada.
Five double-decker buses carrying the Raptors players, their families and musician Drake moved at a crawl due to the crowds, as players like Kawhi Leonard, who was named the Most Valuable Player of NBA Finals, sprayed champagne on the fans.
The convoy was expected arrive at Nathan Phillips Square, which leads to Toronto's city hall just after noon, but the massive crowd delayed the programme. Trudeau joined the celebrations at a stage in the square.
Canadians from coast to coast and all the way up to the Arctic have been celebrating since the Toronto Raptors captured their first NBA championship in a country traditionally known as the home of ice hockey.
The Raptors victory is the first major professional sports championship for a Canada-based team since Major League Baseball's Toronto Blue Jays won the World Series in 1993. Toronto has been waiting for its beloved Maple Leafs to win the NHL championship since its last Stanley Cup victory in 1967.