A father charged with the murder of his partner and their two children in a Sydney home last night was the full-time carer for his sons, it’s been revealed.

Emergency services were called to what police allege was a “particularly violent scene” in Campbelltown just before 8pm yesterday, where they found the bodies of a 46-year-old woman and two children, aged 12 and four, inside the home.

9News understands he was the father and full-time carer for the two boys, who both had severe learning disabilities and were non-verbal.

Emergency services were called to a home in Campbelltown about 7.50pm today.© 9News

The family moved to Sydney from Bangladesh about 10 years ago, and the mother worked full-time.

Acting Superintendent Michael Moroney told Today this morning that police understood “the deceased and the two children were related” to the 47-year-old man charged over their deaths.

“Whilst I can’t give you specific information in regards to how they passed, what I can tell you is all three persons sustained significant injuries, and it was a particularly violent crime scene,” he said overnight.

Moroney told Today that the house was “described as a very traumatic scene, a very horrific scene”.

A 47-year-old man was arrested at the scene and taken to Campbelltown police station.

This morning, police said the man had been charged with three counts of domestic violence murder.

He was refused bail and appeared in court today. He will return to court in mid-July.

Community rocked

Moroney wouldn’t go into details about any weapons being seized, saying only “a number of items” were found inside, but no guns.

He said the bodies “were located in various parts of the premises” and it was believed the 47-year-old man called emergency services.

“I haven’t listened to the Triple Zero call,” he said.

“Broadly, quite broadly, the information was, an incident happened at that location and he was requesting police to that scene.”

Acting Superintendent Michael Moroney addresses the media after a woman and two children were found dead at a home in Bankstown.© 9News

Moroney said the man had no history with police and there were no offenders believed to be outstanding.

There was no indication of mental health issues, but that would form part of the police investigation.

A large police presence remained into the night on the street, where police had established a crime scene.

The home was cordoned off with police tape, and multiple police vehicles with flashing lights were parked up and down the street.

Police could be seen in the front yard of the home.

Neighbours spoke this morning of their shock and horror at the news.

“My heart sunk and being a mum – not even that, just, two young kids, you know what I mean,” one woman told 9News.

Campbelltown detectives are investigating with the help State Crime Command’s homicide squad.

Police called on anyone with information to come forward.

The gruesome discovery came hours after police announced hundreds of people had been arrested in a statewide operation targeting repeat domestic violence offenders.

“This today appears to be not something that we had on our radar in terms of being known to police, but I can reassure the public that domestic violence is a number one priority for the NSW Police, and we will continue to prioritise DV offenders,” Moroney said.