Shocking details emerge of three-year-old killed by 'sawn-off shotgun' in Sydney home

As a man faces firearm and AVO breach charges over a three-year-old's death, shocking details have emerged as to how the Sydney child was shot dead in her family home.

Police have seized a single barrel sawn-off shotgun from the Lalor Park house where the girl was killed on Sunday night just before 8pm.

It's understood the gun was loaded and not secured in a safe.

Neighbours rushed towards the home after hearing a loud bang and a man screaming “she’s dead… she’s shot herself”.

A visibly distraught man was filmed sitting in the gutter with his head in his hands as police made their way into the home. Source: 7 News
A visibly distraught man was filmed sitting in the gutter with his head in his hands as police made their way into the home. Source: 7 News
The Lalor Park home remained cordoned off on Monday as the investigation continued. Source: AAP
The Lalor Park home remained cordoned off on Monday as the investigation continued. Source: AAP

As paramedics tended to a visibly distraught woman, who was filmed screaming "I hate you, I hate you" and "he killed my baby girl".

Local resident Mark Tupua was one of the first on the scene where he found a man "with blood all over his hands" crying and struggling to breathe.

"I thought it was a gun so I ran out as quick as I could," he told ABC.

"He was just yelling at the top of his lungs to call for help, so I ran back inside to ask my sister to call,” he told the ABC.

NSW Police contractors prepare to take the body of a three-year old girl who was fatally shot from a house in Lalor Park in western Sydney. Source: AAP
NSW Police contractors prepare to take the body of a three-year old girl who was fatally shot from a house in Lalor Park in western Sydney. Source: AAP

Mr Tupua said a hysterical woman was heard yelling “he shouldn’t have a gun in the house” while also expressing fear that her other children might be taken away as a result of the tragedy.

Police documents obtained by 7 News show that the man possessed a prohibited firearm without a licence or permit.

“[He] did not take all reasonable precautions to ensure that a firearm was safely kept,” the document states.

A second neighbour, Mel Toilalo, said she heard a man and woman arguing before finding that same man sitting in the gutter with his head in his hands.