A Noongar women has been identified as one the three friends who died in a fatal car crash in Perth's south-east at the weekend.

Chloe Websdale was travelling back home from a weekend away camping trip with Kyle Retallack and Joshua Cox when their car crashed into a tree on the Brookton Highway.

It was reported the crash happened at 3pm Sunday in Lesley, about 35 kilometres from the CBD.

The 23 year old formerly worked for Babbingur Mia, an Aboriginal health organisation which focuses on the support of the health, social and emotional well-being of Aboriginal women.

Babbingur Mia released statement expressing their heartbreak over Ms Webdale's death.

"Babbingur Mia and South Coastal Health and Community Services are heartbroken to learn of the passing of our dear Chloe Websdale," Babbingur Mia said via social media.

"During her time with us, Chloe was a cherished member of our team, with a bright future ahead of her."

Babbingur Mia clinical nurse manger, Jenna Greaves, said "Chloe began her journey with us as a young trainee, and we had the privilege of watching her grow into a wonderful young woman.'

"Though her journey took her in a new direction, she always remained a part of the Babbingur Mia family, and her warmth, kindness, and contributions will never be forgotten.

"Our hearts go out to Chloe's family and all who loved her. We extend our deepest sympathies during this difficult time."

Miss Websdale played A-grade cricket for the Rockingham Hornets, which said the loss was "devastating for our club".

Mr Retallack, 27, has been described as "a genuinely lovely person [who] wouldn't hurt a fly", and that "he was always smiling and happy." by a friend

The family of Mr Cox, 26 told 9News he was "free spirited" and has a "gentle heart".

Police say it's too early to know what caused the crash but are actively investigating what happened.

Acting Commissioner Mike Peter spoke about the incident at a recent media conference.

"What I can say, the scenes that the first responders had to respond to were things that they'll probably never forget in their careers," Acting Commissioner Peters said.

It has been revealed the scene of the incident was so severe that

It took fire and emergency services more than three hours retrieve Ms Websdale, Mr Cox, Mr Retallack's bodies from the wreckage due to the severity of the crash.

All three were wearing their seatbelts and there were no signs of speeding.