A post-mortem into the death of the American sprinter, Florence Griffith-Joyner, has concluded that she died from suffocation during an epileptic fit.

Her sudden death last month led to renewed allegaltions that her three Olympic gold medals in 1988, were achieved through the use of performance-enhancing drugs.

But the investigating pathologist Richard Fukumoto said he found no connection between the cause of Florence Griffith-Joyner's death and the use of steroids.

Ms Griffith-Joyner always denied taking any performance-enhancing substances.