Six people, some believed to be children, have been injured and taken to hospital after an inflatable slide was blown away.
The incident took place on Main Street, in Ripley, North Yorkshire, when strong winds lifted the attraction into the air.
Police were alerted to the accident at 11.10am this morning by the ambulance service.
Five of the injured people were taken to Harrogate District Hospital and the sixth person was taken to Leeds General Infirmary, suffering from chest pains.
It is not believed at this time that anyone was critically injured.
A North Yorkshire Police spokesman said: "Officers have seized the slide and investigations are continuing at the scene.
"The Health and Safety Executive have been informed and are also attending the scene of the incident."