A woman has been seriously injured falling from a fairground ride.
Humberside Police said she was believed to have fallen from one ride at Hull Fair on to the base of a nearby one, striking a teenage boy as she fell.
She was taken to hospital with serious injuries which are not thought to be life-threatening. The teenager suffered minor injuries.
Two rides were closed after the incident, which happened at about 19:30 BST on Monday.
Police and health and safety officials from Hull City Council are investigating.
Ch Insp Paul Kirby, tactical commander for Hull Fair, said: "We have very well established plans in place with the council for any incident like this at the fair, and I want to thank everyone for their patience while we deal with this.
"I am appealing for anyone who might have seen what happened, or who has any video footage of it to contact us."
We’re currently in attendance with Hull City Council at an incident at Hull Fair where a woman was injured after falling off a ride. She's been taken to hospital for treatment. Please be patient as we work to establish the circumstances around this. Two rides are closed. Log 514 pic.twitter.com/xto73fpWUi— Humberside Police (@Humberbeat) October 7, 2019
In 2017, more than 30 people were trapped in mid-air for five hours when a ride broke down at Hull Fair.
It is one of Europe's largest and oldest travelling funfairs, dating back to 1278, and is held over a week in October every year.