Indiana State Fair

4 were killed and at least 40 were injured when during a storm the stage at the Indiana State fair collapsed.

Approximately 12,000 people were at the concert and the last performer Sarah Bareilles commented on what a beautiful night it was 30 minutes before a 53 MPH thunderstorm struck and caused the stage to collapse on the "Sugar Pit", a VIP area where over 200 people were seated.

It is the first tragedy during such a public event in the State of Indiana since 1963. On Halloween night that year, during a "Holiday on Ice" skating exhibition at the Indiana State Fairgrounds Coliseum, a propane gas explosion killed 74 people and injured nearly 400.

More on this later..


Sources:
http://www.youtube.com/watch?v=63GKrWWF5d8
http://www.msnbc.msn.com/id/44133994/ns/us_news-life/
http://rt.com/news/indianapolis-stage-collapse-video/