IAAF investigates Gatlin's coach

The International Association of Athletics Federations (IAAF) said yesterday it was investigating Justin Gatlin's coach Trevor Graham for possible doping violations.

Olympic and world 100 metres champion Gatlin faces a life ban after a positive test for the male sex hormone testosterone.

In a statement the IAAF said the investigation was being conducted in conjunction with the US Anti-Doping Agency (USADA).

"If evidence exists, either from the ongoing BALCO investigation or otherwise, that Graham has engaged in doping practices, disciplinary proceedings will be initiated against him through USADA," the statement said.

The US Olympic Committee has banned Graham from using its facilities because of the "unusual number of athletes he has coached who have been convicted of doping offences".