Kempton meeting abandoned after incident involving champion jockey Jim Crowley
The accident occurred as the field rounded the home turn in the Breeders Backing Racing EBF Maiden Fillies' Stakes.
Nellie Deen was tracking the pacesetting Madame Butterfly in the hands of Tylicki when the pair suffered a heavy fall.
Crowley and Electrify were racing immediately behind and were brought down, as was Steve Drowne's mount Skara Mae.
Ted Durcan was also caught up in the melee and was unseated from Sovrano Dolce.
Both Drowne and Durcan returned to the weighing room, albeit walking gingerly, but Tylicki and Crowley were attended to on the track for some time.
With racing having already been delayed for over an hour, Racing UK reported that both riders were being taken to the major trauma unit at St George's Hospital in Tooting, with Tylicki taken by air ambulance and Crowley by road ambulance.
