A rollercoaster has come off the rails at a theme park in Scotland, leaving eight children and two adults injured.
Eyewitnesses said the Tsunami rollercoaster came off its tracks at the M&D's amusement park in North Lanarkshire, Scotland.
It is believed the ride landed on a children's biking area. Witnesses described the scene as being "like a horror film".
In some photos people can be seen trapped upside down in their seats on the carriage, with their legs protruding into the air.
Emergency services are at the scene dealing with the incident.
The Scottish ambulance service said they had sent six ambulances, a specialist operation team and a team of doctors to the site.
The theme park said there had been a "serious incident" and it was closed "until further notice".
A man who gave first aid to children at the scene said at least eight people, mainly children aged between 10 and 15, had been injured.
James Millerick told STV News: "The a carriage from the tsunami ride had fallen off completely and scraped through a metal gate.
"The roller coaster was full at the time. There were at least eight people on the roller coaster at the time, with a variety of injuries."
He continued: "People were trapped underneath because it had fallen upside down.
"It was at least ten metres high when it derailed. It went straight through the metal gate, crushing it."
Ben Genovese told ITV News: "The ride came crashing down, landing on the kids bike area.
"Some kids got out quickly, unscathed. Others looked to be hurt.
"All the rides were then closed and most people headed for the exits."
A Police Scotland spokesman said: "Emergency services are responding to an ongoing incident at M&Ds theme park in Motherwell and further updates will be given in due course."
Katie Burns said she had just finished riding the rollercoaster and was walking past when the carriage crashed with children on board.
On Facebook, she said: "Literally got off the Tsunami at M&Ds and then walking past and the next lot of people get on and the full thing goes off the tracks. Honestly never been so scared in my life.
"Kids and adults are still on it upside down, it's like something out a horror film, children crying and everything.
"Literally can't believe this, my heart goes out to everyone on it, a full load came off the track but and on the pavement, like a horror film worse thing ever heard and seen, can't get over this."
She posted an image of one of the rollercoaster wheels on the pavment.
A M&D spokesman said: "A serious incident occurred at M&D today involving the Tsunami rollercoaster.
"We have all emergency services on site to assist.
"The theme park is closed until further notice."
According to the M&D's website, the Tsunami rollercoaster can go at speeds of up to 40 miles per hour through corkscrew turns and loops on a 650km track.
Children under 10 are not allowed to use the ride, and under 14s must be accompanied by a paying adult.