Social workers visited home 'hours before' murder of Adelaide mum and kids

Social workers carried out a welfare check on Adeline Rigney-Wilson and two of her children only hours before they were found dead at a property north of Adelaide.

Ms Wilson was in an on-off relationship with Steven Graham Peet who has been charged with the alleged triple murder.

Mystery still surrounds how Ms Rigney-Wilson and her children, Amber, 6, and Corey, 5, died.

Mr Peet, 30, made no application for bail when he appeared in the Elizabeth Magistrates Court on Tuesday.

Steven Peet, pictured left, has been charged with three counts of murder after his partner Adeline Yvette Rigney Wilson, pictured right, and her two children were found dead at their home in Adelaide.

Amber and Corey were killed in the tragic case. Photo: Facebook

The bodies were found by police after a tip off inside a house in Hillier, north of Adelaide, on Monday.

Peet was taken into the court in handcuffs and was wearing a blue jumpsuit. He appeared to have some minor facial injuries but made no comment during the appearance.

Ms Wilson's mother Donna Rigney, described the 29-year-old as a beautiful woman who had problems with drugs, something that had strained their relationship.

Peet did not apply for bail when he appeared in court on Tuesday. Photo: 7 News

Authorities discovered the bodies of a little girl and her brother along with their 29-year-old mother on the property. Photo: 7 News

She had not spoken to her daughter for about four months.

"She was a good mother. She growled, but it doesn't matter because you've got to pull your kids into line and that's how she did it," Ms Rigney said.

"She got mixed up with the wrong crowd but she always made sure her children were right."

Ms Rigney, who revealed her daughter was an ice addict, added she did not know her daughter's partner and did not want to know him.

When the bodies of Ms Rigney-Wilson and her children were found, police described the deaths as domestic related.

Family of the triple murder victims mourn them. Photo: AAP

It is believed Ms Rigney-Wilson and Peet had only been living together at the Hillier property for a matter of weeks.

Barossa Local Service Area officer-in-charge Chief Inspector Alby Quinn said the nature of the crime was very traumatic.

"This does appear to be domestic-related and we are not looking for any other further persons in relation to this incident," he said.

Witness Sam Burnell told 7 News: I just can't understand it, why would someone want to do something like that, they were totally innocent."

Sam Burnell. Photo: 7 News

Families SA said in a statement to the Adelaide Advertiser: “Social workers were in active contact with the mother and children.

“It would be inappropriate and disrespectful to the deceased to publicly elaborate on the nature of the support being provided.

Adeline and Amber. Photo: 7 News

“As with any event of this magnitude the appropriate authorities will examine the circumstances around the deaths and the department will participate in and support that process fully.”

Several family members attended the first court hearing but made no comments.

Peet had shared anti-domestic violence messages on social media prior to the deaths.

* National domestic violence helpline: 1800 737 732 or 1800RESPECT. In an emergency call triple-zero.