London: Leading American coach Alberto Salazar has encouraged athletes in his care to take banned substances, a documentary screened by the BBC on Wednesday claims.


Mo Farah. Pic/AFP 

Salazar, 56, who coaches Britain's two-time Olympic champion Mo Farah, is alleged to have doped Olympic silver medallist Galen Rupp, the USA's national 10,000 metres record-holder, in 2002. Both Salazar, an athletics great who won three successive New York marathons, and Rupp deny any wrongdoing, while there is no suggestion that Farah has broken doping rules.