Queensland Police Commissioner Katarina Carroll says the decision to stand down the detective who was leading the investigation into Wednesday's murder-suicide at Camp Hill "had to be made".

On Thursday afternoon, at a press conference about the deaths of Hannah Clarke and her three children Laianah, Aaliyah and Trey in a car fire, Detective Inspector Mark Thompson suggested killer Rowan Baxter may have been "driven too far".

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RT 05 Apr 2020 23:00 CEST

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