“It has been alleged the fire occurred as a result of some sort of battery that might have caught on fire,” Queensland Ambulance Service medical director Stephen Rashford said. “There are allegations it potentially was a scooter,but we are not sure.”

It was believed the e-scooter battery was charging at the time.

Dr Rashford said both victims suffered “very significant burns” and were given resuscitation at the scene by paramedics.

“Both patients were placed into induced comas due to the level of their injury,” Dr Rashford said.

A crime scene remained at the property and investigations continued,but police believed the incident was not suspicious.