Friend watches horrific moment parents are killed in crash after holiday

Four children, including a newborn baby, have been left orphaned after their parents died in a horror crash on a highway on Western Australia's southwest coast.

Three of the children were badly injured and their father Eduardo Hernandes Pereira Rodrigues, 41, and mother Danielle Bileski de Mello Pimental, 37, were killed when the Brazillian family's four-wheel drive overturned on the Forrest Highway in Binningup on Sunday afternoon.

Three-month-old Rafael, three-year-old Anthony and six-year-old Andre remain in a stable condition at Perth Children's Hospital.

Eduardo Hernandes Pereira Rodrigues and Danielle Bileski de Mello Pimental (front) were killed in a car crash on Sunday. Source: Facebook

Mr Rodrigues and Ms Pimental have a 15-year-old son, Joao Miguel, who was not involved in the crash.

Mr Rodrigues' parents were also injured in the crash and are believed to be in a stable condition.

The family had been returning to Perth from a holiday in Margaret River, and a friend of the couple was driving ahead of the family when the crash happened.

Mr Rodrigues was feeling tired earlier that day, family friend Mariana Queiroz told 7NEWS.

“I remember my husband yelling, 'please Mariana, it's them', but I couldn't think much,” she said.

“And when I saw through the mirror, I saw the car rolling over, I don't know how many times but it was a lot.”

Mariana Queiroz witnessed the horrific crash as she and her husband were driving ahead of the family. Source: 7 News

A GoFundMe page created on Monday is aiming to raise $50,000 to help with funeral expenses and travel costs for grieving family members in Brazil.

“We kindly ask your help with all the costs they will need to bring family from Brazil, visas and funeral
expenses,” the GoFundMe says.

“Please any donation will help this family and make it less painful.”

More than $60,000 has so far been donated.

Police say the 4WD was heading north on the Forrest Highway near Binningup, just before 4pm when it rolled a number of times.

Mr Rodrigues had been driving and his wife was a rear passenger.

Both died at the scene.

The family were travelling home from a trip down south in Western Australia. Source: 7 News

A number of comments have been left by donors on the GoFundMe page.

I'm very sorry for what happened! No one should grow up without parents, and no parent should lose their child so early," one donor wrote.

"Know that the Brazilian community is here to give you all the necessary support at this very difficult and sad time."

Police are appealing for information from anyone who witnessed the crash or can provide dash cam footage.

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