Three men have been arrested in connection with an alleged stabbing incident in Crumlin.
Police were called to Cairn Walk during the early hours of Saturday morning.
Detective Inspector Michelle Griffin said: "At 2:50am we received a report of a stabbing incident at an address in the Cairn Walk area.
"Police responded along with the NIAS.
“Three men aged in their twenties and a woman were taken to hospital for treatment.
"Two of the men remain in hospital, one of them is in a critical condition.
"We have arrested three men in connection with the incident and I want to appeal to anyone who was in the Cairn Walk area at around 2:50am and has information which may assist our investigation to contact detectives by calling the non-emergency number 101, quoting reference number 141 of 27/04/19."
It is understood two of the men who have been arrested were also treated in hospital.
A Northern Ireland Ambulance Service spokesman said: "We got the call at 2.54am following reports of a stabbing incident in Cairn Walk.
"We sent a rapid response paramedic, three ambulance crews and ambulance officers to the scene. All three crews took patients to the Antrim Area Hospital."
The scene has been sealed off to allow a forensic examination to take place.
In a joint statement, DUP South Antrim representatives Paul Girvan MP, Pam Cameron MLA and Trevor Clarke MLA said: "This is a very serious incident and our thoughts and prayers are with those involved and their respective family circles.
"Our hope is that those who have been victims of this alleged attack pull through. Our thanks go to the emergency services who attended the scene.
"This is hugely shocking for the local community too. We appeal for anyone with information to bring it to the attention of the PSNI as a matter of urgency.”