Man's body found after house fire in Broken Hill, NSW

The body of a man believed to be aged in his 70s has been found after a fire at a house in the NSW outback town of Broken Hill.

Emergency services were called to the semi-detached home in Argent Street about 1am today after neighbours reported seeing flames.

The heat from the fire was so intense firefighters initially couldn't get inside.

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When they did eventually gain access at 3.20am they found the body of a man in what was believed to be a bedroom.

He has not yet been identified but is believed to be the man in his 70s who lived there, NSW Police said.

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Investigations are underway into the fire but police have been told it may have started in the fireplace.

The home did not appear to have smoke detectors, police said.