Police have denied claims the husband of one of the women who died in the Dreamworld tragedy had his phone and wallet stolen after the accident.

Canberra mother-of-two Kate Goodchild, 32, has been named as one of the four victims of the theme park catastrophe.

Citing Ms Goodchild's uncle, the Seven Network reported her heartbroken husband's phone and wallet were stolen from their eight month old daughter's pram.

But the alleged incident was understood to be a 'misunderstanding'.

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Kate Goodchild's husband had his phone and wallet stolen, it has been claimed

Reports suggest the Thunder River Rapids raft flipped, crushing two people, while another two became stuck underwater underneath the conveyor belt

'It's completely below the belt,' the uncle of Ms Goodchild was quoted telling the Seven Network earlier on Wednesday.

But Detective Inspector Mark Thompson told a media conference police had looked into the alleged incident, and could confirm it did not happen.

'I'm able to confirm that that is incorrect and that hasn't happened,' the Queensland policeman said.

The claims came after Ms Goodchild's family suffered a triple blow in Tuesday afternoon's tragic accident on the Thunder River Rapids ride.

Kate's brother Luke Dorsett, 35, and his partner Roozi Araghi, 38, were also killed in the catastrophe.

Family matriarch Kim Dorsett said in a Facebook post: 'My whole family has been wiped out.

Members of the public laid floral tributes outside the popular theme park on Wednesday

Ms Goodchild's brother Luke Dorsett, 35, (left) and his long-term partner Roozi Araghi, 38, (right) both died in the tragedy on Tuesday

'I have three children and two of them are now gone.

'My eight-month-old granddaughter is never going to know her mother and that truly breaks my heart.'

New Zealand mother Cindy Low, 42, from New Zealand, was on the ride with her son, aged 10 when she was killed

New Zealand mother Cindy Low, 42, from New Zealand, was on the ride with her son, aged 10, when she was killed.

According to the Sydney Morning Herald the boy witnessed his mother's death.

There was one other child on the ride, a girl aged 12.

Gold Coast University Hospital has confirmed to Daily Mail Australia both children were discharged on Tuesday night.

On Wednesday afternoon the Department of Human services said they were mourning the loss of Ms Goodchild and Mr Dorsett - who they described as 'two valued employees'.

'Kate and Luke were well-liked and respected by their colleagues and will be greatly missed,' Department of Human Services Secretary Kathryn Campbell said.

'I would like to offer my heartfelt condolences to the families, friends and colleagues of Luke and Kate at this devastating time'.

Many have visited the park to lay flowers and pay their respects to those who died

A woman is seen here laying down a bouquet outside the park

Earlier it was reported that two of the four adults on board the doomed ride died after being trapped beneath the raft, while two were trapped underwater in the conveyor belt.

The two children on board were thrown to safety and miraculously survived.

'In terms of how they escaped... Maybe through the provenance of God. From what I have seen, almost a miracle that anybody came out of that,' Assistant Commissioner Brian Codd said on Wednesday.

Witnesses described seeing a young girl screaming for her mother just moments after the tragic accident.

Dreamworld was closed indefinitely after the tragic accident

Visitors to the theme park have claimed the ride had been plagued by mechanical issues earlier on Tuesday

Two women were waiting in line for the Thunder River Rapids ride at the Gold Coast theme park when they spotted a hysterical young girl searching for her mother, who had been crushed to death in the raft accident.

'She just kept screaming "Where's Mummy? Where's Mummy?",' witness Claire Wooley told The Daily Telegraph.

As the investigation into how the tragic accident occurred, police are reviewing CCTV footage in an bid to determine where it went wrong.