Jamaican runner Nesta Carter's doping scandal has cost him and his teammates their medals from the 4x100 meter relay in Beijing, China in 2008.

The news taints Bolt's all-time Olympic record after he completed an unprecedented 'triple triple' in Rio 2016, becoming the only man to win all three sprint events at three Olympic Games.

Carter's illegal drug-taking became apparent when samples from Beijing were re-analysed recently and officials at the International Olympic Committee found traces of the prohibited substance methylhexaneamine.