Four new cases of equine flu have been found in horses at a Newmarket yard, the British Horseracing Authority has announced.
The news comes after the BHA reported on Sunday that no fresh cases of flu had been found.
British racing has been on hold since Wednesday, following three cases of the highly-infectious disease being found at a stable in Chesire. The number of cases at this stable has now risen to six.
Click to watch a report by ITV News Anglia's Stuart Leithes
The Newmarket yard where four cases of flu were found belongs to Simon Crisford, the former manager of the well-known Godolphin stables.
The four affected horses have been quarantined at the yard.