Kenya 's athletic federation has banned runners ' agents for six months . Marathon track record holder Dennis Kimetto is a director of one of two banned management firms - sport Sports and Rosa & fitness . Investigations into a doping spike among athletes is expected to take place .
Kenya 's athletic federation has banned runners ' agents for six months . Marathon world record holder Dennis Kimetto is a client of one of two banned management companies - Volare Sports and Rosa & Associati . Investigations into a doping spike among runners is set to take place .