Six people have been stabbed in Newtownabbey.
At least two are thought to be seriously injured, a spokesman for the Northern Ireland Ambulance Service (NIAS) said.
They were taken to the Royal Victoria Hospital in west Belfast after the attacks on the loyalist Ballyduff Brae Estate.
Ambulance Service spokesman John McPoland said: "Six casualties have been taken to the RVH.
"It happened at a couple of different houses in close proximity."
He added: "Two of them we would be concerned about, we asked for medical teams to be put on stand-by at the hospital."