Nine children and two adults have been taken to hospital after a rollercoaster derailed at a theme park in Scotland.
Eyewitnesses said the Tsunami ride at M&D's amusement park in Motherwell, near Glasgow, had been full when it came off the track.
Police, firefighters and paramedics rushed to the scene as several visitors posted images on social media appearing to show a mangled carriage on a pathway surrounded by dozens of people.
Police Scotland originally said 11 people had been hurt but later revised it to ten.
A Police Scotland spokesman said there were nine passengers on the ride at the time.
Chief Inspector David Bruce said: "Along with other emergency services we attended immediately and on arrival it became clear that a series of five gondolas connected on a train on the Tsunami ride have detached from the rails, struck the superstructure and then struck the ground.
"We have launched an investigation and an inquiry between Police Scotland and the Health and Safety Executive."
Mr Bruce added: "They (the gondolas) fell less than 20 feet. It would appear that they have been coming round a bend and at that point it has detached. At this stage it's very, very early in the inquiry and we are still taking witness statements.
"It's an inverted rollercoaster which means that the riders hang in gondolas below the rails rather than sit above them.
"I don't know what speed it would have been travelling but it was operating and rollercoasters do travel at speed," he added.
First Minister of Scotland Nicola Sturgeon said: "My thoughts are with everyone involved in this terrible incident at M&D's theme park, especially those injured."
Ruth Davidson, leader of the Scottish Conservative Party, said: "Awful news coming from M&Ds. Deeply concerning - our thoughts are with those affected and with emergency responders."
