STILLWATER, Okla. (AP) Oklahoma State basketball player Tyrek Coger died from an enlarged heart after a 40-minute team workout on the football stadium stairs in hot weather, officials said Friday.

While the temperature was 99 degrees, it wasn't known if the weather played a role in Coger's death. The 22-year-old forward, who had recently transferred to OSU, did not appear to struggle during Thursday's workout at Boone Pickens Stadium, school spokesman Gary Shutt said at a news conference.

Coger sat down after the drills and the team noticed later he was having issues and called 911 about 5 p.m.; he was pronounced dead at a hospital at 6:23 p.m., Shutt said.