Two boys, aged 11 and 12, are still said to be in a serious condition with chest, leg and arm injuries at the Royal Hospital for Children in Glasgow after the Tsunami ride derailed and hit the ground at M&D’s on Sunday afternoon.
Two others are in a stable condition in Glasgow hospitals.
In total, ten people were treated at hospitals in Glasgow and Wishaw after the crash but most have now been discharged.
The theme park remains closed, with police, engineers and the Health and Safety Executive (HSE) inspecting the ride and the five gondolas that fell 20ft to the ground from the rollercoaster.
Amy Thomas said debris from the crash narrowly missed hitting her three-year-old son Dylan, who was playing on a toddlers’ ride near the rollercoaster.
She told BBC Scotland: “The rollercoaster above went to turn a corner but it didn’t quite make it, bits started cracking off and then it just fell.
“The front carriage broke off and pieces were bouncing to the ground.
“Luckily there was a fence surrounding the toddlers’ ride which bore the brunt of the falling debris, but pieces of it landed two feet from him.”
Anyone who witnessed the incident, captured footage or took photographs is urged to contact the force by calling 101 or emailing Police Scotland