Girl dies in hospital following horror three-car crash on the Riddoch Highway that also killed her younger brother

A teenage girl injured in a tragic accident near the South Australia-Victoria border, which also killed her younger brother, has died in hospital.

The 15-year-old girl suffered serious injuries on the Riddoch Highway near Nangwarry at around 2.40pm on Sunday, during which her 5-year-old brother also died.

The chaos started when a black Holden sedan collided with an emu, police said on Sunday evening.

“A black Holden sedan collided with an EMU, with the female driver and sole occupant sustaining no injuries,” police said.

‘A gray Toyota estate braked to avoid the collision, while a white Nissan ute crashed into the rear of the Toyota.

“Two occupants of the Toyota, a five-year-old boy, died at the scene, while a 15-year-old girl was taken to hospital with serious injuries.

‘The driver, a 42-year-old man and two other passengers, a 46-year-old woman, a 13-year-old girl and a six-year-old boy were taken to hospital for treatment of minor injuries.’

All occupants of the Toyota were from Mount Gambier, police added.

A child was killed in the collision on Sunday afternoon. Image: 7News

The chaos started when a black Holden sedan collided with an emu, police said on Sunday evening

The chaos started when a black Holden sedan collided with an emu, police said on Sunday evening

The driver of the Nissan, a 22-year-old man from Worrolong, was not injured but paramedics took him to hospital as a precaution.

Major Crash officers are now at the scene investigating the circumstances of the crash.