The Alton Towers theme park has confirmed it will be closed today - after an accident on its Smiler rollercoaster left four people with serious injuries.
The resort has said guests with pre-booked tickets will be offered a refund.
Yesterday, a speeding carriage with 16 riders on board collided into an empty one standing on the track.
Visitors said the ride had experienced trouble earlier in the day.
Ian Crabbe - Divisional Director at Alton Towers - doesn't think it had anything to do with prior technical problems, though:
