Brisbane banker Neil de Graaf's ex-girlfriend and her family hid in the bathroom as their Ipswich home went up in flames.
Police said that de Graaf's ex-girlfriend April Wilmot, her mother Tracey, brother Shannon and his girlfriend were lucky to escape the scene alive as de Graaf drove his BMW into their garage and set the house alight.
The Brisbane Times reports De Graaf ran from the scene on fire, and neighbours poured water over him before he was rushed to the Royal Brisbane and Women's Hospital.
His burns were too severe to treat, as they covered 95 per cent of his body, and his life support was turned off at 8:30pm on Tuesday after his family discovered that he didn't have enough liquid to donate his organs.
Police are currently investigating.
De Graaf's aunt Magreth has said that her nephew had previously tried to commit suicide.
The four people who were hiding in the bathroom were lucky to escape with minor burns.
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