USA Track and Field announced Lee Evans, a former world record holder and gold medalist sprinter, died on Wednesday. He was 74 years old.
His cause of death has not been announced.
Evans suffered a stroke last week in Nigeria and was unconscious in a hospital as of Sunday, according to the San Jose Mercury News.
Evans won two gold medals at the 1968 Summer Olympics in Mexico City while competing in the 400-meter dash and the 4x400-meter relay. He set world records in both events that stood for over 20 years.