br pAt least 14 people were injureda when a temporary wall collapsed on fans lining up to the enter a Backstreet Boys concert at Winstar Casino in Thackerville, Oklahoma, on Saturday, August 18.ppThe casino said in a statementa that fans were asked to seek shelter after lightning was spotted near the venue but around 150 guests remained outside.pp“At approximately 5:30 p.m., the storm hit and knocked over the concert entrance trusses with 70-80 mile an hour winds and heavy rain. 14 people were treated at the scene and then transported to local hospitals. Two have already been released.