Three dead in Darwin house fire

Three people have died in a house fire in Darwin's north.

Firefighters responding to a call about 6.30pm on Saturday found a house ablaze in the Kululuk community.

The intensity of the fire meant firefighters were unable to enter the home.

NT Fire & Rescue Service acting watch commander Eric Koomen said on Saturday two people had died in the blaze but on Sunday a spokesman said a third death had been confirmed overnight.

The ages and genders of the deceased are unknown.

A fourth person was transported to Royal Darwin Hospital by St John Ambulance.

Mr Koomen said investigations were under way into the cause of the fire.