Transcript for Gunfire injures 4 at Raptors parade
No you to the investigation under way in the shooting in rob that panic that spread at the parade for the Toronto raptors when gunfire erupted causing thousands to run for their lives and linsey Davis has more on that. Reporter: In the days leading up to the victory parade the mayor urged people to come be part of celebrating the historic win, a massive crowd answered and when gun shots rang out, mayrecommend broke out. In the nidz vz what was supposed to be a celebration, there was a crowd of in excess of 1.5 million people happening Monday afternoon after the Toronto raptors crowd appeared. Then a wave of people will begin to run for their lives. What is happening? Oh, my god. Oh, this is not good. Reporter: The Toronto police operation center posting on Twitter reports of woman shot, people running from area. The whole team sitting on an open air bench including Pierre Trudeau and they alert the crowd of emergency. We're dealing with the situation that's not far from here. This is serious. Reporter: Trudeau later tweeting I hope all those injured in today's shooting have a speedy recovery and would like to thank the Toronto police. They later reported four injuries deemed serious but not threatening and made three arrests and recovered two firearms. He is in chel brace of the first championship for them. Toronto police are making an appeal in addition to asking people to call in with information, they're also asking people with video to upload it to their website. Certainly scary moment. They were worried about the crowd size to begin with. A lot of people would turn out, first time it ever happened there.
This transcript has been automatically generated and may not be 100% accurate.