【Nanda van Bergen】

Following the shocking death of four people at Dreamworld this week,Nanda van Bergen an eery Facebook post condemning the Australian theme park's safety has been spreading online.

The post, written a few weeks before Tuesday's accident on the Thunder Rover Rapids ride Queensland tourist attraction, ended with the chilling line, "someone could get seriously injured or killed one day!"

The post, written by visitor Tracey Christensen on Oct. 10, has been shared by hundreds of people. The post has since been made private or deleted, according to Facebook.

This isn't the first time safety concerns surrounding the park have been raised. Australian Worker's Union (AWU) representative Ben Swan told ABC Radio his organisation have been voicing their concerns since April 2015.

"We have had concerns about maintenance and operations regimes," he said.

"What I can say is that it's now a matter of public record, because we put 'right to information' requests into the division of Workplace Health and Safety [saying] that we had concerns."

This Tweet is currently unavailable. It might be loading or has been removed.

However, park representatives are flicking away the accusations.

The park released a statement via email Thursday, defending the safety of their rides. "If it’s not tested, it doesn't open," the statement reads.

The Thunder River Rapids ride passed an annual engineering inspection, conducted by an external firm, on Sept. 29, a park spokesperson said.

"Details of this external audit will of course be provided to the Coroner and workplace safety investigators," the spokesperson said, reiterating the park's "unwavering support" for the families of the four victims, who include siblings Kate Godchild and Luke Dorsett, as well as Dorsett's partner Roozi Araghi.

Two children, aged 10 and 13 were also on the ride when the incident occurred, but survived. Queensland police said it was "almost a miracle that they escaped unharmed."

CARD ID: 110297

(Editor: {typename type="name"/})