A man accused of murdering his former partner has faced court via video link after members of her family arrived, bringing her four-month-old son.

Dharminder Singh, 48, faced Toowoomba Magistrates Court on Monday via video link, two days after the search for Jana Armstrong ended in tragedy.

The 30-year-old mum had been missing for four days when her body was found in remote terrain near Toowoomba, west of Brisbane, by hunters, stunning the local community.

A large group of family and friends attended court on Monday, including Armstrong’s four-month-old son. He was in the arms of her sister Faith Isaacs, who has taken over as the child’s carer.

New mum Jana Armstrong had been missing for four days when her body was found. Photos: AAP

Isaacs thanked the community for its support after Singh’s brief hearing, saying the infant was doing as well as could be expected.

“I’m just glad he’s in our arms,” she said outside court.

Isaacs said it was always her sister’s dream to be a mother.

“She loved every day, every minute, spending time with her son,” she said.

“She was never away from him and she’s just the most caring and loving person.”

Isaacs stepped up as the boy’s carer a month after losing her own newborn baby, relatives said.

Armstrong and her siblings had also lost their mum to breast cancer seven years ago. Their father died of a heart attack five years ago, cousins Hannah and Lara Sweedman said.

“Jana was the glue for the family,” they wrote on a GoFundMe fundraiser.

The campaign had raised more than $54,000 by Monday afternoon with the money to go toward funeral costs and raising Armstrong’s son.

“Our family is absolutely devastated and trying to process this unimaginable loss,” they wrote.

“We will make sure Jana’s baby boy always knows just how deeply his mummy loved him and how incredibly special she was – her memory will live on through him forever.”

Isaacs confirmed in an online tribute she would take care of her beloved sister’s child.

“Losing my beautiful sister in this way is something I will never be able to understand or put into words,” she posted on social media on Sunday.

“I promise you, Jana, your beautiful baby boy will always know exactly who his mummy was.”

Singh was arrested hours after Armstrong’s remains were found late on Saturday.

Police are investigating the possibility the accused killer had moved her body in the period after she disappeared.

“This is a horrific crime,” Detective Acting Inspector Brian Collins previously said.

He said there was no relevant domestic violence protection order was in place between Armstrong and Singh.

Police had previously released footage of Armstrong from the day of her disappearance, showing her carrying her son and pushing him in a pram across a car park.

They have been trying to trace the movements of Armstrong and her white Hyundai Kona in the hours after she was last seen.

They are interested in any footage from between Toowoomba and Esk, along Esk Hampton Road and the New England Highway, between 10.30pm on July 7 and 1.30am on July 8.

Singh was remanded in custody and his matter adjourned until October 1.

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-AAP