Tragedy as family make heartbreaking decision to turn off teen's life support after she sustained horror injuries in car crash while on her way to KFC

  • Alyssa Postle, 17, has succumbed to her injuries after a crash in Brisbane's north
  • The teen was a passenger in her classmate's car when they crashed on Tuesday
  • Her parents made the decision to turn off her life support on Friday afternoon 
  • Tributes have been flowing in for the 'beautiful person' and 'amazing friend' 
  • The Genesis Christian College community have shared their condolences 

A teenage girl has succumbed to her injuries after a horror crash on the way to KFC after school.

The family of Alyssa Postle, 17,  made the heartbreaking decision to turn off her life support on Friday afternoon, three days after the collision in Brisbane's north.

The teen was a passenger in her friend's car at about 7pm on Tuesday night when the vehicle veered off the road and into a power pole. 

Alyssa Postle, 17, (pictured right with her mother) has succumbed to her injuries after a horror crash on the way to KFC after school

Alyssa Postle, 17, (pictured right with her mother) has succumbed to her injuries after a horror crash on the way to KFC after school

Alyssa's family made the heartbreaking decision to turn off her life support on Friday afternoon, three days after the collision in Brisbane 's north

Alyssa's family made the heartbreaking decision to turn off her life support on Friday afternoon, three days after the collision in Brisbane 's north

Tributes have been flowing in across social media for the 'beautiful person and amazing friend' while flowers adorn the crash site in a tragic memorial.

Alyssa was completing her final year of school at the Christian Genesis School before her young life was cut short.

Staff and students were notified of the tragic news in a letter sent out by the principal on Friday afternoon.

The tight-knit Christian community came together to share their blessings and send messages of condolence to the family.

'All our love to you and the family. Our prayers are with you all during this difficult time. Alyssa may you spread your wings angel,' one friend said.

'Alyssa was a beautiful girl inside and out. Sending all of our love to the Postle family and to the other family also affected by this tragedy,' another friend wrote.

Others described the situation as 'unimaginable' and 'tragic', struggling to find the words to express their grief over the tragic loss.   

'Alyssa was a beautiful girl inside and out. Sending all of our love to the Postle family and to the other family also affected by this tragedy,' Amanda Pert said

'Alyssa was a beautiful girl inside and out. Sending all of our love to the Postle family and to the other family also affected by this tragedy,' Amanda Pert said

Tributes have been flowing in across social media for the 'beautiful person and amazing friend'

Tributes have been flowing in across social media for the 'beautiful person and amazing friend'

Alyssa was completing her final year of school at the Christian Genesis School before her young life was cut short

 Alyssa was completing her final year of school at the Christian Genesis School before her young life was cut short

'Devastating and heartbreaking, our thoughts and prayers are with the family, & those involved,' wrote another friend.

The year 12 student was rushed to the Royal Brisbane and Women's hospital in a critical condition after the horror crash on Tuesday night. 

She was riding in a white Subaru with another classmate when the car careered off the road at an intersection near Old North and Lavarack roads at Bray Park.

A witness who was on the scene at the horror single car smash said it was a 'horrible accident.'

Alyssa Postle, 17, was riding in a white Subaru with another classmate who was driving when the car careered off the road

Alyssa Postle, 17, was riding in a white Subaru with another classmate who was driving when the car careered off the road

The year 12 student was rushed to the Royal Brisbane and Women's hospital in a critical condition after the horror crash on Tuesday night

The year 12 student was rushed to the Royal Brisbane and Women's hospital in a critical condition after the horror crash on Tuesday night 

'We went out there and my husband and one of our friends... we saw one girl, stuck in the front,' Witness Jamuna Sitaula told the Courier Mail.

'We saw so many people come, police come and ambulances come. She didn't move.'

School administration at the Genesis Christian College are providing support to families and staff.

'Our thoughts and prayers are with the families at this challenging time,' Genesis Christian College principal Paul Sterling told News Corp

Pictured: A police forensic crash unit arrives on the scene

Pictured: A police forensic crash unit arrives on the scene

A witness who was on the scene at the horror single car smash said it was a 'horrible accident.' Pictured: KFC in Warner

A witness who was on the scene at the horror single car smash said it was a 'horrible accident.' Pictured: KFC in Warner 

'Our primary concern is the emotional wellbeing of our students and we acknowledge the impact of this situation on our entire community.

'Lives have been affected and our role is to be as supportive as possible and take appropriate steps to assist students, families and staff.' 

The driver of the vehicle, a 17-year-old classmate of the the teenager, escaped with only minor injuries.

Family turn off teen's life support after horror car crash on her way to KFC in Brisbane's north

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