Newmarket's racing industry is facing more questions after trainer Gerard Butler admitted using steroids on horses at his stables.
He says it was only done under advice from vets. He also says that more than 100 horses across the town's stables may have been given the same drug.
ITV News Anglia's Olivia Paterson reports.
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.