'She just pushed me too far, so I killed her': Watch: The moment a hateful son confesses to killing Kiwi mum Linda Sidon

Warning: Disturbing content

A man who confessed to killing his mother nine years after she disappeared told police he had snapped after the 46-year-old "pushed him too far one day."

Daniel Paul Heazlewood, 31, was initially charged with murder over the 2009 death of his mother Linda Sidon, but last week pleaded guilty to the downgraded charge of manslaughter at Brisbane Supreme Court.

On Monday, he was sentenced to a maximum eight years behind bars for her manslaughter and a total of 11 years and six months for that and other charges, including five drug offences, the Daily Mail reports.

However, due to time served, Heazlewood will be eligible for parole in July 2019.

Heazlewood was arrested in 2015 after police had put surveillance on him as a suspect in his mother's disappearance.

A surveillance device capture Heazlewood talking about his mother as he was driving to Numinbah Valley, where it was revealed later he had buried her.

Daniel Heazlewood was arrested in Brisbane in 2015 over the 2009 disappearance of his mother. Photo / Facebook

"She just pushed me too far one day, so I killed her," he could be heard saying.

After her death, Heazlewood allegedly told a friend how he felt about his mother.

"I hate her. I can't stand the b****," he allegedly said.

While being interviewed by police after his arrest, Heazlewood told detectives his mother had come into his room brandishing a steak knife and started to verbally abuse him.

He said she would abuse him about the fact he was still living at home, and that he had jumped up and grabbed her wrist before they both ended up on the floor.

"We were on the ground but I grabbed her wrist and then we struggled, I don't know if I was saying anything," he said.

"And then somehow we fell and I was in the frame of my bedroom, and then her head was on my chest and we were both facing the roof and I had her wrist and I had my forearm around her neck and we were struggling and I had pressure on there [her neck].

"And I don't think it was very long and then she wasn't moving."

Linda Sidon's body has never been found, despite her son assisting police with their search. Photo / File

Heazlewood said he then "scooted" away from her and went into the lounge room for a while before going back and moving her body to her bed. A "day or two" later he decided to check on her and found she wasn't breathing.

"So then I sat around the house for another while wondering what to do, I remember at some point I went to Bunnings and I bought a shovel and a bag of lime, I remember hearing from a movie lime does something," he said.

He said he then wrapped her in a blanket before moving her to the boot of her own car.

"Then that night I drove to pine creek road, and then I left the car and went into the bush a bit and dug a hole," he said.

"And then I went back to the car and I remember trying to carry her, I couldn't, I kept dry reaching and vomiting when I tried to put her on my shoulder so I just dragged her."

He said he dumped her body in the hole he had dug, covered it with lime and dirt and left.

Prior to his arrest Heazlewood also told his friend he thought his mother was an ugly b****, a waste of space and said he hoped she got hit by a bus, the Gold Coast Bulletin reported.

That same year, Heazlewood allegedly told a housemate that his mother was a bogan, c*** and whore, the Daily Telegraph reported.

Supreme Court Justice David Boddice described Heazlewood's actions as "disgraceful" and "reprehensible" and said he clearly had a hatred and disdain for his mother.

"It seems to me that you held a genuine hatred for your mother and never regretted her demise," he said.

Daniel Heazlewood pleaded guilty over the death of his mother, Linda Sidon, and was sentenced to 11 years by the Brisbane Supreme Court on Monday. Photo / File

Sidon's older sister Pauline Sidon described her sister as "beautiful" and "charismatic" when she fronted court on Monday.

"Her future had a chance to be bright — she was robbed of future happiness, how someone can live with that lie for six years is beyond my comprehension," she said in a victim impact statement.

She said her parents sadly passed away before they could find out what happened to their beloved daughter.

"To know their daughter had been [killed] by their grandson would have broken their hearts and souls," she said.

Sidon - a New Zealand-born part-time cleaner who had a history of anxiety, anorexia and depression - had originally been thought to have committed suicide.

Sidon's body has never been found.