A freak windstorm is blamed for a stage collapse at the Indiana State Fair where the country group Sugarland was to perform Saturday night. Five people were killed, dozens more were injured.

The fair's executive director, Cindy Hoye, said, "We're all very much in mourning. It's a very sad day at the state fair."

All activities at the fair were canceled Sunday as officials tried to figure out what happened and how it could have been prevented.