A tragic incident happened during the Kansas State-Oklahoma game on Saturday when an Oklahoma fan in his mid-40s died after suffering a heart attack.

“An Oklahoma fan did suffer sudden cardiac arrest while at the game,” David Adams, director of Riley County EMS said in a report by The Wichita Eagle. “It was witnessed by Riley County EMS and Kansas State University stadium personnel. Treatment was started immediately without delay, and he was transported to Via Christi Hospital in Manhattan, where he was later pronounced dead.”

The incident happened at around 11:25 a.m., which was about the same time OU scored its first touchdown and took a 10-0 lead over K-State in the first quarter. The Wildcats went on to upset the then-No. 5 Sooners, 48-41.

Paramedics were originally called for a patient experiencing chest pain and not feeling well, the report said, and they were on hand when he collapsed, Adams said. He was seated with friends and family in a spectator section of Bill Snyder Family Stadium.

He died at Ascension Via Christi Hospital in Manhattan, which is across the street from the stadium.

Emergency Medical Services did not release the identity of the man.