Hundreds have heat-related problems at Toby Keith tornado relief concert

Toby Keith performs at the Oklahoma Twister Relief Concert in Norman, Okla., on Saturday. Alonzo Adams / Invision via AP

Nearly 1,300 people were treated for heat-related problems Saturday at a benefit concert for Oklahoma tornado victims, a hospital spokesperson said.

Most of the people received minor treatment at cooling stations or a medical facility within the University of Oklahoma stadium in Norman, but 170 required more treatment and 21 were taken to hospitals, Kelly Wells, spokesperson for Norman Regional Health System told NBC News.

The Oklahoma Twister Relief Concert in Norman featured Oklahoma resident Toby Keith, along with a who’s who of country stars, including Garth Brooks, Trisha Yearwood, Willie Nelson and Mel Tillis. It was held at the University of Oklahoma’s 82,000-seat stadium. The crowd was estimated at more than 60,000, the Tulsa World reported.

The concert began at 3 p.m. CT, when temperatures in Norman hit 93.

Keith grew up in Moore, Okla., which was devastated May 20 by an EF5 tornado that killed 23 people. Proceeds of the concert were to go to the United Way of Central Oklahoma May Tornadoes Relief Fund, The Oklahoman reported

Margaret Schneider of contributed to this report.