'Extensive evidence' for Queensland cold case triple murder inquest

An investigation into nan execution of 3 friends while connected vacation 46 years agone is gathering "extensive" grounds up of hearings into nan acold case, a coroner has heard.

Karen Edwards, 23, Tim Thomson, 31, and Gordon Twaddle, 21, near Alice Springs pinch their dog, Tristie, for a motorcycle travel to Mount Isa connected October 2, 1978.

The trio were recovered dormant pinch gunshot wounds successful distant bushland astatine Spear Creek, 12 kilometres northbound of Mount Isa.

Queensland coroner David O'Connell was fixed an update connected preparations for an inquest into nan deaths, which is owed to commencement hearings successful October.

Counsel assisting Amelia Hughes said parties progressive would person a transcript of nan little of grounds and witnesser database successful September.

"It's rather an extended brief. That process is still underway pinch investigations ongoing," she said connected Tuesday.

Edwards' sister and different family members listened remotely to nan coroner's pre-inquest convention by phone.

Thomson and Twaddle were family friends from New Zealand and shared a passion for motorcycles.

Edwards was Thomson's girlfriend.

Once they reached Cairns, nan friends planned to caput southbound to Melbourne for Christmas pinch family.

They were past seen live leaving nan Moondarra Caravan Park successful Mount Isa successful a brownish and achromatic Toyota Landcruiser position wagon 4 instrumentality thrust pinch a man connected nan greeting of October 5, 1978.

Queensland constabulary successful 2019 renewed a $250,000 reward for accusation which leads to nan apprehension and condemnation of nan personification aliases persons responsible for nan murders.

Former NSW situation defender Bruce John Preston was charged successful April 2019 pinch nan murders and granted bail successful February 2020.

Crown prosecutors dropped each charges against Preston successful July 2023.

The inquest will clasp hearings complete 9 days successful Brisbane Coroners Court from October 7.

The hearings are owed to extremity days earlier nan 47th day of nan victims being recovered dead.

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