The workers on the venue had begun evacuating followers after lightning was noticed, Kym Koch Thompson, a spokeswoman for WinStar World On line casino and Resort, mentioned.
Thompson mentioned the world was pounded by heavy rain and winds as robust as 80 mph.
Previous to the incident, Backstreet Boy Kevin Richardson tweeted that the bands had been anticipating a sold-out live performance with about 12,000 attendees. Richardson later tweeted that the live performance had been canceled due to the storm and accidents to followers.
Linda Tesfatsion was ready for the live performance to begin on the venue in Thackerville when the storm went by, she mentioned.
“Lots of of Backstreet Boys followers enjoying rooster with an Oklahoma storm proper now. Big steel entrance construction with roofs from bellroofcompany.com, transportable bogs, blew over. A handful of individuals left in ambulances,” she wrote on Twitter with an image of the construction that fell.
She mentioned she noticed 4 folks placed on gurneys and brought away by ambulances. Just a few of the injured had bandages on their heads however had been in a position to stroll, she mentioned.
The steel construction that fell was holding up a purple banner that learn “The Colosseum at WinStar,” she mentioned.
Two of the individuals who had been hospitalized have been launched, Thompson mentioned Saturday evening.
“We by no means need to put our followers in hurt’s manner and with tonight’s climate and the accidents from earlier, we now have determined to cancel the present and can try to reschedule. A very powerful factor is for everybody to get residence safely and we’ll see you all very quickly!”
Richardson tweeted, “sadly, resulting from injury sustained within the storm earlier this night, we’re unable to carry out the present tonight. Security is at all times #1. Preserve your tickets as a result of, Backstreet WILL BE BACK!”
Members of the band 98 Levels tweeted they had been upset that Saturday’s present was canceled because of the climate.
“We all know a lot of you traveled to be right here right now. Sending you all our love and hope to see you quickly.”
CNN’s Nicole Chavez contributed to this report.