UPDATE 4.20PM: SPEED, alcohol and not wearing a seatbelt were ruled out as possible factors in Sunday's two car crash along Maryborough-Hervey Bay Rd.
The head-on crash took the life of a 53-year-old Maryborough woman, who was behind the wheel of a white Hyundai Elantra.
The cause is undetermined as investigations continue, Senior Constable Glenn Rusten from the Wide Bay Forensic Crash Unit said.
A 39-year-old Bidwell woman, who was a passenger in the white Elantra, was discharged from the Hervey Bay Hospital on Monday following an overnight stay.
She suffered soft tissues injuries including bruising and lacerations in the crash.
The 20-year-old Hervey Bay man who drove the blue Mazda 3, suffered fractured vertebrates in his lower back, a broken left foot and minor injuries.
The head-on collision happened along Maryborough-Hervey Bay Rd between Susan River and the roundabout about 3.45pm.
The blue car, which was being driven towards Hervey Bay, crossed the road's double centre-lines, into the path of the woman's car, on-scene investigations suggested.
UPDATE 9.50AM: THE 39-year-old woman passenger and the 20-year-old driver involved in Sunday's horrific crash on Maryborough-Hervey Bay Rd are recovering in hospital.
The head-on crash took the life of the 53-year-old Maryborough woman driving the white Hyundai Elantra.
The Hervey Bay man was driving a blue Mazda 3.
The passenger in the Elantra is from Bidwill.
If you have any information that may assist police with their investigations call Crime Stoppers on 1800 333 000 or Police Link on 131 444.
EARLIER: A MARYBOROUGH woman, 53, was killed instantly in a two-car collision on the Maryborough-Hervey Bay Rd.
She was driving a white Hyundai Elantra towards Maryborough when the front of her car was hit head-on by a blue Mazda 3, driven by a male driver, who was the sole occupant of the vehicle.
Police were called to the crash, which happened between Susan River and the roundabout about 3.45pm Sunday
Paramedics and fire and emergency crews followed shortly after.
A rescue chopper was deployed, but was returned back to base shortly after landing as it was not needed.
Senior Constable Glenn Rusten from the Wide Bay Forensic Crash Unit said the blue car, travelling towards Hervey Bay, crossed the road's double centre-lines, into the path of the woman's car.
"The resultant crash impacted the driver's section of the white car and the female driver is deceased."
Investigations were continuing into why the blue car was driven into oncoming traffic, he said.
The 39-year-old front seat female passenger in the white sedan escaped life-threatening injuries, but was treated by paramedics at the scene.She arrived at the Hervey Bay Hospital in a stable condition, a hospital spokesperson said.The male driver suffered non-life-threatening injuries from the crash.
He arrived in a stable condition, a hospital spokesperson said.