Concert officials were evacuating the venue when high winds knocked over trusses at the entrance. All of the people injured were transported to a local hospital, CBS News reports.
Backstreet Boys later canceled the concert. “We never want to put our fans in harm’s way and with tonight’s weather and injuries from earlier, we have decided to cancel the show and will attempt to reschedule,” the band tweeted.
In its own statement, the WinStar World Casino and Resort said, “We know that fans often suffer through inclement weather for their favorite acts, but this was an unusual event and our thoughts are with those who were injured during this storm.”