One dead, one injured in Sydney stabbing

One woman is dead and another is in hospital after a stabbing in Sydney's south.

Police and paramedics were called to a house on Valda Street in Bexley shortly before 7pm, where a woman in her 40s or 50s was pronounced dead.

A younger woman, believed to be in her late teens, is in hospital with non life-threatening injuries.

A man has presented at Kogarah Police Station and is assisting police.