Major Crash officers are investigating a serious crash in Stake Hill on Wednesday morning that injured two men.
The crash occurred around 6.20am on October 16.
A black Toyota Hilux, travelling south on the Kwinana Freeway, left the road and rolled over near Lakes Road.
A man in his 20s, who was a passenger in the vehicle, received serious head and leg injuries and was taken to Royal Perth Hospital by the RAC rescue helicopter.
The driver, a man in his 20s, received minor injuries and has also been taken to Royal Perth Hospital.
Major Crash investigators are asking anyone who saw the crash, or the Toyota Hilux travelling in the area prior to the crash, to call Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au.
Members of the public travelling in the area that may have dash-cam footage are asked to upload it to https://wapf.au.evidence.com/axon/citizen/public/kwinanafreeway16102019.