Newmarket-based Godolphin trainer Mahmood Al Zarooni is to face a British Horseracing Authority disciplinary panel hearing after samples taken from 11 horses in his care in the Suffolk home of horse racing were found to contain traces of anabolic steroids.
Al Zarooni, who won the Ladbrokes St Leger at Doncaster last year with Encke, as well as the richest race in the world, the Dubai World Cup, with Monterosso, has trained a whole host of big-race winners since joining Sheikh Mohammed's operation.
Al Zarooni told the Godolphin website he had made a "catastrophic error".
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.