'If There's A God Up There I Don't Think It's Fair': Neighbours Devastated Over Car Fire Deaths

A neighbour who had known Hannah Clarke for more than 26 years said the death of the loving mother and her three young children was 'beyond comprehension'.

Speaking to 10 News First just a day after the 31-year-old was murdered by her estranged husband along with her three children Laianah, Aaliyah and Trey -- Brian Cavanagh said he had known Hannah since she was just five-years-old.

Hannah Clarke with her three children, Aaliyah, Laianah and Trey. Image: Supplied.

"She was just such a loving young girl," he said of the devoted mother, who along with her children was set alight inside her family car by Rowan Baxter.

Baxter also died at the scene from self-inflicted wounds.

A friend of Hannah's parents, Sue and Lloyd, Cavanagh recalled how Hannah's father had once rejoiced in her marriage saying "my little princess is getting married and she's going to have a princess' wedding".



Tributes Flow For Hannah Clarke And Three Kids After Car 'Doused In Petrol And Set Alight'

There has been an outpouring of grief and love for a "beautiful" mum and her children after they were reportedly killed by the family's estranged father in a horrific car fire in Brisbane.

Cavanagh was one of the first people to find out about the attack after he was called by detectives who were trying to get in contact with Hannah's parents to inform them of the tragedy.

After talking with police he said he called her father himself, thinking it was strange that detectives were looking for the couple.

"I rang him back again and said, something has happened in the street, you better get back," he said.

Brian Cavanagh said he knew Hannah since she was a little girl. Image: 10 News First

Cavanagh broke down as he recalled times where Hannah's father often returned from work to play with his grandchildren.

"I can't even think how they must feel," he said through tears, "it's beyond comprehension, terrible."

"If there's a god out there, I don't think it's fair."

As detectives work to piece together the events leading up to Wednesday's tragedy, details about the family's terrifying final moments have been revealed.

Matt Gee-East was one of a group of people who saw black smoke coming from the street. He rushed to help, thinking it was coming from a house fire.

Matt Gee-East risked his life to try and help the family but said it was too late for the children. Image: 10 News First.

"Then we came around the corner and I saw the car," Gee-East recalled on Thursday, as he visited a memorial for the family.

He claimed Hannah was already on the grass by the time the group arrived and was screaming for help.

Risking their own lives, Gee-East said he and his brother ran towards the burning car which had apparently begun rolling down the hill.

"We got the back door open and that's when we saw the kids in the car," he recalled.

"By that stage, it was too late."

Police examine the burnt-out vehicle at Camp Hill. Image: 10 News First

Gee-East said it was a moment he wasn't going to be able to forget and said he was concentrating on trying to get back to work and keep going.



Police Knew Hannah Clarke Was A Victim Of Domestic Violence

A day after Hannah Clarke and her three young children were killed in a Brisbane car fire that also left her estranged husband dead, police have confirmed they were aware of domestic violence issues between the former couple.

If you or someone you know is in immediate danger, dial 000. If you need help and advice, call 1800Respect on 1800 737 732, or Lifeline on 13 11 14. A range of domestic and family violence resources based around the country can be found here.