The main stage at Ottawa Bluesfest collapsed Sunday night during a Cheap Trick concert as a severe thunderstorm sent thousands of people running for cover. Bluesfest said there were no serious injuries.
Bluesfest official Joe Reilly said one person suffered a broken leg, the Vancouver Sun reported.
The members of Cheap Trick were performing at the time, but they got off the stage safely.
Environment Canada had a thunderstorm warning in effect for Ottawa, saying winds were expected to reach 56 mph.
The Bluesfest grounds is almost a football field in size.