The Oklahoma State Medical Examiner's Office says Oklahoma State basketball player Tyrek Coger died from an enlarged heart and that the manner of death was natural.
Office spokeswoman Amy Elliott provided the information in an email Friday. It came a few hours after university officials held a news conference on Coger's death, which happened Thursday evening just after the team held a workout at the football stadium in extreme heat.
Elliott's email says Coger died from cardiomegaly with left ventricular hypertrophy.
The office's family assistance coordinator, Eddie Johnson, told The Associated Press that the final report is not likely to be ready and released for another eight weeks.
OSU spokesman Gary Shutt said Friday that Coger underwent health screenings to ensure he was physically able to participate in sports, but could not release the results due to federal law.
Coger told the Stillwater NewsPress earlier this month that he had surgery several years ago to drain fluid from around his brain. It wasn't clear whether that played a role in his death.