Police remain at the scene after a child died in hospital following a medical emergency at a property in Larne.
Officers and emergency services were called to the home early on Thursday afternoon following a report of the emergency in the Loran Avenue area of the town.
The PSNi said officers were at the scene of a sudden death in Larne, but added the child was taken to the Royal Hospital for Sick Children and "sadly passed away".
A post mortem will now be carried out today to determine the cause of death and enquiries remain ongoing, police said.
"Until a post mortem is completed, we will not know the cause of death and would, therefore, urge people to refrain from speculation in relation to this death," the service added.
DUP councillor Andrew Clarke said on Thursday police had been at the scene throughout the afternoon.
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Around about lunchtime there was a lot of activity, ambulances arriving, the Air Ambulance came, and that activity continued throughout the afternoon,” he told the BBC.
“There was a lot of shock in the local area as news filtered out.”
A spokesperson for the Northern Ireland Ambulance Service (NIAS) said it attended a call just after 1pm.
“The Northern Ireland Ambulance Service received a 999 call at 1.07pm on Thursday following reports of an incident in the Antiville area of Larne,” they said.
“NIAS dispatched a rapid response paramedic and two emergency crews to the incident.
“The charity Air Ambulance, with HEMS crew on board, was also asked to attend.
“Following assessment and initial treatment at the scene, one patient was taken by ambulance to the Royal Belfast Hospital for Sick Children.”
