The Indiana State Fair has ended in tragedy, with five people being killed after a stage collapsed.
The roof of the stage was torn off just before the band Sugarland were due to perform.
"The wind just picked up and the stage just caught and the roof just caught and it went up like a sail and then it crashed forward into the people standing in the front. There were people trapped underneath and everyone was running and screaming," said Kirby Ehler of local NewsChannel 15. "They were asking any medics or nurses not to leave."
"We are all right," Sugarland tweeted. "We are praying for our fans, and the people of Indianapolis. We hope you'll join us. They need your strength."
Sara Bareilles, who had taken to the stage earlier in the day, tweeted, "I'm speechless and feel so helpless. Please send love and prayers to Indianapolis tonight. My heart aches for the lives lost."
Watch video of the collapse here. Be warned, you may find this disturbing.