Three children have been injured after a bouncy castle broke loose from its tether.
Police believe the inflatable castle, at the White House Hotel on the West Cliff in Whitby, North Yorkshire, blew away in the wind at about 1440 BST.
A seven-year-old boy was airlifted to hospital with broken bones, while a nine-year-old boy broke a bone in his leg.
A girl, aged seven, is thought to have suffered concussion.
'Off the ground'
All three are said to be in a stable condition in hospital.
The seven-year-old boy was flown to the James Cook Hospital in Middlesbrough. His injuries are serious but not thought to be life-threatening.
The other two children were taken by ambulance to Scarborough District Hospital.
An investigation is under way into what happened.
Ch Insp Steve Smith, from North Yorkshire Police, told BBC Radio 5 live: "It appears that the bouncy castle blew away in the winds and the three young people who were in it at the time got, to a certain degree, taken off the ground, and they've received some quite serious injuries in two cases."
He said one boy had suffered spinal, leg and arm injuries, and the girl had suffered a head injury.
A force spokesman said: "All three remain in hospital in stable conditions.
"The bouncy castle was recovered with the help of officers from the North Yorkshire Fire and Rescue Service.
"There is no longer any police involvement with this incident and the circumstances leading to the bouncy castle leaving its tether will be conducted by officers from the environmental health department at Scarborough District Council."