Published on: August 13, 2011 at 10:59 PM

A microburst collapsed a stage at the Indiana State Fair in Indianapolis killing at least four and injuring at least 24.

Winds were estimated at 65 mph. The storm struck around 9 pm.

Michael Moss says warnings were posted well in advance of the storms but there are conflicting reports about whether the warnings were communicated to the crowd awaiting the delayed Sugarland concert.