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THE mum accused of slashing her 10-year-old daughter's throat posted a trio of mysterious TikTok videos on the day of the alleged murder.

Sophie Wang was tragically found dead at her home in Australia on Tuesday with cops reportedly revealing mum Yingying Xu, 46, told them she believed her daughter was possessed by demons.

a young girl wearing a blue shirt and white collar smiles for the camera
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Sophie Wang, 10, was found dead with her throat slashed
a woman wearing glasses and a grey jacket looks at the camera
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Sophie's mum Yingying Xu, 46, was arrested after cops launched a murder investigationCredit: TikTok
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Cops were seen at the house as they investigated the unsettling death of the young girlCredit: Alamy
a man in a blue suit with a badge that says ' forensics ' on it
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Officials in blue suits were seen leaving the property with evidence bags on themCredit: Alamy

Queensland Police revealed Xu was arrested after cops launched a murder investigation when Sophie's heartbroken dad - Yun Wang - found her body.

Detective Acting Inspector Kent Ellis said they tracked down Xu in a nearby street four hours afterwards.

She reportedly told Queensland Police she believed her daughter was possessed by demons, report .

Ellis announced to reporters: "This is a tragic and distressing incident and our thoughts are with the family and community at this time.

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"In my 15 years as a detective, it is one of the most confronting scenes I have ever seen."

Officials are now believed to be investigating Xu's social media after three videos were posted to TikTok on the same day as Sophie's distressing death.

Xu can be seen talking to the camera in Chinese in the videos which have now all been taken down and her account removed.

In the clips, Xu talks about religion and her Christian faith - heavily focusing on the holy trinity.

She says in one of her captions: "Only the Triune God is the one true God, and only Jesus is the incarnate Son of man and Son of God."

Another caption in the mysterious posts said: "I thought I was a Christian in church before, but I recently realised that I was just a Christian in name only and had not truly confessed and repented.

"I felt very regretful."

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The videos will now help form part of the investigation into the case, say .

Sophie was found just after 6pm at her home in Emerald Lakes, Carrara, as her horrified father and emergency services were unable to save her.

Cops started their investigation shortly after.

Yun - an Associate Professor at Griffith University - put on a blue forensic suit at around 6pm and helped officers uncover what happened.

Ellis added: "Despite her father and the emergency service's best efforts, the 10-year-old was pronounced deceased by attending paramedics.

"An investigation was immediately commenced and as a result the child's mother was charged with her murder."

In my 15 years as a detective, it is one of the most confronting scenes I have ever seen

Kent Ellis Detective Acting Inspector Queensland Police

Xu's case was due to be heard at Southport magistrates court today as she didn't show in person.

She was remanded in custody and will next appear on November 29. 

The girl's principal at Emmanuel College, Dan Brown, wrote a letter to parents paying tribute to the "beloved" schoolgirl.

He wrote: “It is with a heavy heart that I inform you of a tragic incident that occurred in a home within Emerald Lakes last night, resulting in the passing of one of our beloved students.

“We are devastated by this incident and know it will profoundly impact our school community.

“Our prayers go out to the family and friends of the child, and we extend our deepest condolences to all those affected by this tragedy.”

a man wearing glasses and a grey jacket with the number 188 on the front
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Sophie's dad Yun Wang found his daughter inside their home
a police car is parked on the side of the road at night
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The house was taped off as emergency services surveyed the sceneCredit: Facebook
a young girl wearing a medal and a certificate from emmanuel college
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Sophie was a Year 5 student described as a 'beloved' member of Emmanuel CollegeCredit: 9News
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Classmates of Sophie have left her flowers today after the news shocked her schoolCredit: 9NEWS
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Counselling and grief support services have been provided to all students.

Sophie's devastated classmate Oliver Hayes, 11, told Daily Mail Australia: "She was one of the smartest kids in our school.

"There's so many words to describe her. She was very nice, she really cared about people a lot and she was very kind.";

Queensland Police Inspector Lou Serafim said cops were called at 6pm, adding the girl lived at the home where her body was found.

“At approximately six o’clock this evening police received a triple-0 emergency call in relation to a 10-year-old girl who was located deceased in a unit,” she said.

“At this point in time we are treating the death of the 10-year-old girl as suspicious, and investigations are currently under way in relation to the demise of the girl.

“The triple-0 call was made by a relative who was at the incident scene when they located the 10-year-old girl.”

She called the scene "quite traumatic".

Pictures circulating on social media show several cop cars and an ambulance with their lights flashing on a street.

A tent was put up beside the ambulance shortly before 8pm, according to the Courier Mail.

There's so many words to describe her. She was very nice, she really cared about people a lot and she was very kind

Oliver HayesSophie's classmate

The Queensland newspaper reported members of a forensics team in blue suits were seen entering the property.

Neighbour Chris Sydes told Australia's Nine News he was struck by "heartache" when he watched the cops come into the street.

He said: "It's just a terrible, terrible event, terrible, breaks your heart."

Two male colleagues of Professor Yun visited the home on Wednesday morning and spoke to officers.

Another unnamed resident was in shock.

She told local media: "It's normally very quiet around here. I can't believe it."

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Emerald Lakes is located about a 15-minute drive in land from the popular Surfers Paradise.

It's beside Carrara Stadium, which hosted track and field at the 2018 Commonwealth Games, and about an hour's drive south of Brisbane.

a police truck is parked on the side of the road
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Police cordoned off the street where the young girl was found deadCredit: Alamy
a bouquet of flowers is tied to a tree trunk
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Floral tributes have been laid outside Sophie's homeCredit: Alamy
a man in a yellow raincoat stands in front of a white tent
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A tent was set up outside the home moments after the investigation was launchedCredit: Alamy
a man in a suit and tie stands in front of a queensland police service sign
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Detective Acting Inspector Kent Ellis described walking into the home as one of the most confronting scenes of his careerCredit: Alamy
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