Toronto Police posted on their official Twitter page: "#Radiohead concert at #Downsview Park has been cancelled due to stage collapse. Asking people to stay away from immediate area."
In another message, police said: "We are not confirming the number or nature of injures at this time at #Downsview Park. We will provide that later when all facts are in."
Within minutes of news spreading, the hashtag #radiohead was the top trending topic on the social network.
In one picture posted on Twitter by Jason Ip, a huge scaffolding that had fully collapsed in the middle could be seen. Along with the picture Mr Ip tweeted: "Radiohead stage collapse. People were underneath and we're getting sent away from the site.
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