Eleven horses from the Newmarket-based Godolphin stable have tested positive for anabolic steroids.
Godolphin trainer Mahmood Al Zarooni is to face a disciplinary hearing, and a number of the stables' top horses have been withrawn from upcoming races.
Click below for a report from ITV News Anglia's Sports Correspondent Donovan Blake in Newmarket.
Racehorse trainer Mahmood Al Zarooni has been disqualified for eight years after 11 of his horses tested positive for anabolic steroids.
The Newmarket Godolphin stables are at the centre of horse doping allegations involving 11 horses and the trainer Mahmood Al Zarooni.