Similarly, Ciaron Maher Racing said on Twitter that Holymanz was OK and “back getting cuddles” after the fall.

Damian Lane replaced Brown on Smokin’ Romans in the Blamey Stakes, while Zahra passed a doctor’s clearance to ride favourite Gentleman Roy, who finished fourth.

The meeting was delayed by 40 minutes for another ambulance to arrive on course, pushed back from 5pm to 5.40pm,

Brown, Zahra, Damien Oliver (Amenable) and Blake Shinn (Elliptical) are all required to give evidence in the enquiry, with stewards still waiting to hear from Brown’s account.

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The Guineas was won by Kiwi raider Legarto, who swamped over the top of Attrition to deny Ballarat trainer Mitch Freedman a maiden group 1 triumph, but Flemington’s feature race was marred by the fall.

Ken and Bev Kelso secured their first group 1 victory in Australia and the hot form of Caulfield Cup-winning jockey Michael Dee continued, having won last week’s Blue Diamond.

Lane said nothing went right for race favourite Jacquinot, who missed the placings.

The Blamey Stakes was won by Nonconformist, who could next head towards the Australian Cup or the All-Star Mile. The victory was rider Harry Coffey’s first in a group 2 race, covering for Grahame Begg’s regular rider Jordan Childs, who won the group 2 Challenge Stakes on Begg’s sprinter Passive Aggressive in Sydney.

Further updates are expected on Brown’s injuries by the Victorian Jockeys Association on Monday.