VIDEO : 14 Hurt At Backstreet Boys Concert

(CNN)At least 14 people were sent to the hospital Saturday after a storm knocked over concert entrance trusses at an Oklahoma outdoor concert venue hosting the Backstreet Boys and 98 Degrees, a spokeswoman for the property owner said. Linda Tesfatsion was waiting for the concert to start at the venue in Thackerville when the storm went through, she said. Giant metal entrance structure, portable toilets, blew over. A handful of people left in ambulances," she wrote on Twitter with a picture of the structure that fell. Severe weather, high winds and rain just passed thru here in Thackerville, OK.