Godolphin trainer 'did not realise' he was breaking doping rules

Godolphin trainer Mahmood Al Zarooni says he "did not realise" he was "in breach of the rules of racing" after 11 horses from the Godolphin stable tested positive for anabolic steroids.

Godolphin is the Maktoum family's private thoroughbred horseracing stable and is overseen by the monarch of Dubai, Sheikh Mohammed.

BBC Sport's Joe Wilson reports.

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