PRESS ASSOCIATION -- A sixth person has died in hospital following a knife attack on Jersey.
The woman was left critically ill following reports five people had died in a multiple stabbing at a flat at Victoria Crescent, Upper Midvale Road, St Helier, just after 3pm.
She has since died at Jersey Hospital, a States of Jersey Police spokeswoman said.
The victims are two women, two men and two young children who are believed to be Jersey residents but whose identities have not been disclosed.
A 30-year-old man is under arrest at Jersey Hospital where he is recovering from surgery, police added.
Eyewitness Andre Thorpe said: "For Jersey it was a major incident. Two ambulances turned up first because it was within a quarter of mile of the ambulance station.
"Then four or five police vehicles came, all blues and twos. They were trying to access a private house in the crescent. It was an old Victorian terrace, a lot of them are split into flats.
"I saw police come running out with a child, it was a small child, I just saw the legs. They went off in an ambulance. When the paramedic came back her shirt was covered in blood."
Mr Thorpe said he believed all the victims were members of the same family. A neighbour said she believed the family were Polish.
A major incident room has been set up at police headquarters in St Helier. A number of witnesses have come forward and police are working to identify the victims.