A 28-year-old man was arrested a short time after the crash and remains in police custody.
Authorities have confirmed he was in a relationship with the woman and is a parent and stepfather to the children. No charges have been laid.
Police have released images of the cars involved in the collision, revealing the extensive damage done to both vehicles.
A 28-year-old man is in custody. Photo / Queensland Police Service
Mt Isa District Acting Superintendent Paul Austin said the images were vital to helping police piece together the events leading up to the crash.
“What occurred on Friday is nothing short of a tragedy, and our officers are dedicated to thoroughly investigating what has occurred, as well as working with the Doomadgee community,” Superintendent Austin said.
“The images of these vehicles are confronting – however, we hope that they can assist our inquiries into this matter and help our officers better understand what has occurred.
“We appeal to anyone who may have seen these vehicles in the days or hours before Friday – or may have had interactions with their occupants – to contact Doomadgee or Mount Isa Police, as well as Crime Stoppers or Policelink.”
Both vehicles have been taken to Mount Isa for examination.
Investigators are continuing to explore several lines of inquiry, including the potential role of domestic violence.
“We’re looking at everything,” Superintendent Austin said.
“As you can imagine, it’s certainly a tragic event.
“The investigation must be methodical and comprehensive.”
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