Mr Ard said crews from Newry, Crossmaglen and Warrenpoint attended the fire.
“On arrival, they discovered a well developed, ventilated fire and immediately attacked that.”
A total of five people were in the house at the time the fire broke out, he said. Four people made it out of the property.
“Our thoughts and condolences are with the family of the bereaved at this time,” he said.
Police say they are continuing to conduct enquiries into the cause of the blaze and are appealing to anyone who may have footage that could assist with the investigation, to contact detectives.