Two people have been stabbed to death in a violent attack at a unit in Sydney's southwest.
Emergency services were called to Huntley Place in Cartwright about 4pm following reports a man and a woman had been stabbed in a dispute.
The man died at the scene, while the woman died in Liverpool hospital despite the "valiant" efforts of paramedics to save her, Superintendent Adam Whyte told reporters at the scene.
"It appears that a male and a female have come to the units here in Cartwright in respect to a dispute and as a result of that a scuffle has broken out and unfortunately it has resulted in two persons being seriously injured and passing away from those injuries," he said.
A man is assisting police with their inquiries.

Two people were stabbed to death. Source: SBS News
Mr Whyte has reassured the public they are not in danger, saying the attack was "specific" and not random.
He said police were still on the scene and trying to piece together what has happened, and were unable at this stage to comment on reports an axe had been involved in the killings.