A 70-year-old woman has died in hospital after a three-vehicle crash on Broken Head Road at Suffolk Park.
Two drivers, a 59-year-old woman and a 69-year-old man, died at the scene on Saturday, 31 October.
The 70-year-old was a passenger in the car driven by the man.
Paramedics treated her at the scene before she was airlifted to Gold Coast University Hospital in a critical condition.
Police advised the woman died on Thursday night, 5 November.
Tweed/Byron Police District Inspector Matt Woods described it as a “horrendous scene” and said both drivers died instantly.
Inspector Woods said initial inquiries indicated two cars were travelling south on the correct side of the road when a northbound maroon Nissan appeared to be on the wrong side and collided head-on with a white Kia.
He said police had interviewed independent witnesses and were looking into reports of erratic driving on Broken Head Road before the crash.
“We have heard similar reports of that, and it is subject to the investigation,” Inspector Woods said.
Police will prepare a report for the coroner.
Anyone with information or dashcam footage of the Suffolk Park crash can contact Crime Stoppers on 1800 333 000.
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