Mo Farah has split with his coach, Alberto Salazar, who is the subject of investigation over doping allegations.
The four-time Olympian has said he has come to the decision because he wants to move back to Britain from America.
Salazar is being investigated by the US Anti-Doping Agency (Usada) after BBC's Panorama made allegations about drugs use at his US training base.
Farah has been coached at the Nike Oregon Project camp under Salazar since 2011, winning six world titles in addition to his four Olympic golds.
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