(CNN) Athletics' governing body the International Association of Athletics Federations (IAAF) has begun an investigation into allegations that the coach and agent for 100 meter world champion, Justin Gatlin, offered to supply performance-enhancing drugs to undercover reporters. CNN has yet to receive a response from either Mitchell or Wagner, but both have denied the allegations to the Telegraph. Gatlin was the surprise victor at the World Athletics Championships in London in August. Gatlin, who has served two doping bans, wrote on Instagram: "I am not using and have not used PEDs [performance enhancing drugs]. "Under the IAAF Rules, all athlete support personnel -- agents, coaches etc -- are bound by both the IAAF anti-doping code and IAAF integrity code of conduct.

Source: CNN December 19, 2017 14:37 UTC