UPDATE: Apprentice jockey Brooke Stower was released from hospital last night after being cleared of any serious injuries following her race-two fall at Clifford Park earlier in the evening.
Stower and fellow apprentice Rebecca Williams both crashed to the turf in the spills.
Both were knocked out in the incident but regained consciousness before being transported to Toowoomba Hospital.
Williams was kept in overnight for further observation after suffering back and neck soreness.
Stewards questioned all riders involved in the race after opening an inquiry in to the falls before adjourning it until Stower and Williams are available to give evidence.
EARLIER: APPRENTICES Rebecca Williams and Brooke Stower appeared to escape serious injury after both riders were involved in a race-two fall at Clifford Park tonight.
The incidents happened in the home straight during the final stages of the Fillies and Mares 0-70 Handicap.
Williams was first to come to grief when Ultimate Rush crashed at the 150-metre mark.
Stower was unseated from her mount Gold Pan in the chain reaction and after trying desperately to cling to the horse's neck she was eventually dislodged 50 metre further on.
Both riders lost consciousness in the falls and lay motionless on the track while being attended to by paramedics alongside concerned onlookers including stewards and track staff.
A second ambulance was called to the track to transport the girls to hospital for observation.
Both regained consciousness before being stretchered to the ambulance.
Williams was reported to be suffering a sore back and neck while Stower also appeared to be clear of obvious serious injury.
Both horses completed the course.
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