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The Athletics Agent, Federico Rosa, is back in custody in Kenya after being charged with a number of offences relating to doping in the case of former Boston Marathon winner, Rita Jeptoo, and one other athlete.

Mr Rosa, an Italian whose family have worked in Kenyan athletics since the 1980s, denies all the charges against him.

Our athletics commentator Ed Harry has been speaking to one of athletics biggest stars Asbel Kiprop - who strongly supports Rosa and says he is innocent.

(Image: Asbel Kiprop, credit: Getty Images)