An inquiry has been launched after two people were injured on a fairground ride in Powys.
The incident took place in Newtown on Saturday night when a barrier is said to have come loose. The Health and Safety Executive is investigating.
The Welsh Ambulance Service said two casualties complaining of back pain were taken to the Royal Shrewsbury Hospital.
It is understood up to 10 young people were on the ride at the time.
Lorna Cartmell, whose 14-year-old daughter was on the "Spider" ride with her 15-year-old friend, said it was made up of four spinning arms. They did not crash to the floor, but people were helped to safety, she said.
She added: "My daughter said the ride was building up speed when there was a jolt and [the seats people were sat in] fell a bit."
Mrs Cartmell said she took her daughter to Newtown hospital for a check up because she was complaining of back pain.
The ambulance service said it was called to the scene in Back Lane car park shortly after 2000 GMT.
A spokesman said: "It is believed a crash barrier had come loose on one of the rides.
"There were two casualties, both complaining of back pain, head pain and blurred vision. They were taken to the Royal Shrewsbury Hospital."
Two fire crews from Newtown were called to the scene, but they were not needed.
Dyfed-Powys Police said it was not a criminal matter, adding that it had informed the Health and Safety Executive (HSE).
The HSE said it was aware of the incident and was investigating.
BBC Wales has attempted to contact the funfair owners.