Body Found After Firefighters Put Out 'Suspicious' House Fire

A man's body has been discovered following a house fire in south-west Sydney that police are treating as targeted and suspicious.

Emergency services were called to the home in Elderslie, about 60 kilometres southwest of the CBD, about 11.40pm on Saturday after reports of a home invasion and house fire.

Fire and Rescue officers worked quickly to extinguish the blaze before finding the body of a man inside the home.

Fatal House Fire In Elderslie
Emergency services were called to the home at 11.40 pm on Saturday. Photo: Steve Hart.

The body hasn't been formally identified but police now believe the deceased was not a resident of the home.

The blaze could have been deliberately lit, according to the NSW Fire Service, who told 10 News First accelerants were discovered at the burnt home.

Fatal House Fire In Elderslie
Jerrycans were found at the scene of the fire. Photo: Steve Hart.

Police said six other people had been inside the home as it caught fire.

They were all treated at the scene and later taken to hospital, along with two responding officers, for smoke inhalation.

Four people, including three children and one adult, were transported to Campbelltown Hospital while one person was taken to Liverpool Hospital.

A crime scene has been established.

Specialist forensic officers, police and detectives are working to establish how the fire started and the circumstances that led to the person's death.

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