Little Tristan Curtis was not secured in his seat on the walk at the Royal Australian Easter Show in Sydney, which should have been locked down before it started. 4 Littler Tristan’s security system was not properly securedCredit: https://www.facebook.com/watch/?ref=search&v=1475719269511179 4 Sky Boustani Curtis watched in horror as the catastrophe unfoldedCredit: 7News 4 Four-year-old Tristan Curtis was not locked in. Credit: 7News The route was seconds away from the riders being thrown into the air when terrified witnesses alerted the pilots to the terrifying situation. Pictures of the four-year-old on the walk were posted on the internet with the restraint system open above his head, as other children sitting next to him had all their own insured. Sky Bursani Curtis’s mother watched in horror as her son’s life was almost in danger. Speaking to the Daily Telegraph, he said: “The girl (pilot) stopped walking but did not get out of her cabin and so another father made him come down to him. “My husband and I were not tall enough to reach him. “They just did not pull his leash, they did not check him.” She added that her son has autism and it was “difficult” to know how she felt after the horrific ordeal. Another witness claimed that the pilot “had no idea” that the boy had not been insured on the way. Eva Levy said: “They stopped the emergency, but it seems that the pilot could not reduce the ride and someone really had to go there and throw his son in his arms. “The spectators had to scream to stop the route.” Another mom posted on the Internet warning parents to be “careful”, adding: “This negligence unfolded in front of so many spectators that they had to scream to make that woman stop walking,” she wrote. “The bar never fell and started the route without notice or checks. Be sure to watch the way they put your child on a ride, because it is clear that some of these operators do not do their job and care! Shame without excuses! “ The organizers of the event have launched an urgent investigation into the incident. A spokeswoman said: “The safety of the visitors to the Fair is of the utmost importance and we have closed the Free Fall route for children following a reported problem with a belt. “The safety systems of the route worked well to prevent any injury and the route will not work again until the full investigation is completed and the route is approved by specialist engineers.” Operators of the Sydney Royal Easter Show must comply with the SafeWork NSW Amusement Device Guide. A NSW police spokeswoman said police were unaware of the incident, adding that it was a matter of safety for organizers. The Free Fall route is located at the children’s carnival, where spectators must be at least 110 cm tall to ride with or without an adult. It comes after a teenager died after falling from the tallest ride in the world in a 400-foot dive when he was not properly insured. Tire Sampson, 14, was identified by police as the victim who died at ICON Park in Orlando, Florida shortly after 11pm local time in March.