Man Accused Of Killing Couple Who Showed Up To His House With An Axe

After 24 hours of questioning, police have charged Eric Delaney, 34, with murder following an alleged dispute that turned deadly in Sydney's south-west.

The charges follow the stabbing deaths of a 40-year-old man and 34-year-old woman at a Cartwright unit complex on Tuesday.

It’s understood the couple did not live at the unit block where they were killed, but lived nearby and were visiting Delaney over a dispute.

10 News First understands detectives returned to the crime scene on Wednesday with Delaney, who was dressed in a blue forensic suit.

Police spent more than half an hour with Delaney as he walked officers around the crime scene and gave them a graphic and detailed account of what he claims happened there.

Image: Steve Hart

Delaney allegedly told police the man and the woman turned up at his unit yesterday afternoon armed with an axe.

He claimed he acted in self-defence by grabbing a knife to protect himself before stabbing them both.

The man died at the scene, while the woman later died in hospital.

Friends of Delaney said they are stunned by what has occurred.

"He is a good person ... in the four years I've known him,” friend Robert, told 10 News First."

"I think he's a fair dinkum bloke. An Aussie. He's working, he's got a job."

A number of emergency vehicles responded to the scene on Tuesday afternoon. Image: 10 News First

Locals told 10 News First that their street was a friendly and quiet neighbourhood until recent times.

Police will now try and piece together exactly how and why Tuesday's dispute turned deadly.

The focus will be on forensic evidence collected from the scene, including an axe that detectives believe was brought to the unit complex by the now-deceased couple.

Delaney has been refused bail and will face Liverpool court tomorrow on two counts of murder.