Racing was deserted within the Monitor Champions League at Lee Valley VeloPark in London after British Olympic champion Katy Marchant and one other rider crashed over the boundaries into the group.
Marchant and German rider Alessa-Catriona Propster left the observe at velocity together with their bikes and collided with spectators.
British Biking mentioned the 2 riders and 4 supporters have been handled by occasion medics and Marchant was taken to hospital.
In an announcement, British Biking added: “WBD Sports activities, British Biking, Lee Valley VeloPark, and the Union Cycliste Internationale unanimously determined to droop all additional racing for the night and need to prolong their greatest needs for a speedy restoration to each riders and all affected spectators.
“We’re working intently with all events to assessment the incident earlier than taking applicable motion.”
On the similar venue on the 2022 Commonwealth Video games a high-speed collision involving a number of riders resulted in England’s Matt Partitions being catapulted over the boundaries into the group along with his bike.
The London venue costing £250,000, across the observe this 12 months.
Thirty-one-year-old Marchant, who gained Workforce Dash gold on the 2024 Paris Olympics, was competing within the second warmth of the ladies’s keirin.