The girl, 42, was airlifted to hospital after being discovered with what’s believed to be severe stabbing accidents at a home in Narre Warren South.
A 15-year-old boy was arrested on the scene and brought to hospital below police guard, Victoria Police stated.
One other lady, 70, and a three-year-old woman suffered severe accidents.
All are recognized to one another, 9News reporter Steph Anderson says.
Police had been referred to as to the home about 1pm after reviews of a number of folks having been assaulted.
The murder squad is investigating.
Upon arrival on the home, police discovered two folks with severe accidents and one with important accidents.
Paramedics arrived shortly after 1pm, taking one particular person to the Alfred Hospital and one other to Dandenong Hospital. The Alfred Hospital affected person is in a important situation.
Police and emergency providers stay on the scene and the investigation stays ongoing.
Police stated they weren’t on the lookout for anybody else in relation to the incident.