(CNN) A woman and her three young children have been killed in a car fire allegedly started by her husband who also died in the incident in Brisbane, Australia.

Hannah Baxter, 31, and her family were in a car when 42-year-old Rowan Baxter climbed in and doused it with petrol before setting it alight, according to multiple Australian news reports.

Ms. Baxter jumped from the vehicle and yelled "he's poured petrol on me," according to ABC Australia. She later died of her injuries in hospital.

Baxter, a former rugby league player, had self-inflicted stab wounds and died at the scene.

Police said in a statement they were called to a car fire about 8.30 a.m. local time Wednesday and three children aged six, four and three were found dead inside. Queensland Police are investigating whether the fire was deliberately lit by Baxter, according to CNN affiliate Sky News Australia

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