MAJOR Crash officers are investigating a serious crash which occurred in Boyup Brook on Saturday, January 30 which seriously injured four people.
About 2pm, a white Holden Rodeo utility travelling east and a white Ford Courier utility travelling west, collided on Bridgetown-Boyup Brook Road.
The 63-year-old male driver of the Holden Rodeo and his 64-year-old male passenger received serious injuries.
The 20-year-old female driver of the Ford Courier and her 16-year-old female passenger also received serious injuries.
All four people were taken to local hospitals before being transferred to Royal Perth Hospital and remain in hospital as a result of their injuries.
Major Crash investigators would like to speak to anyone who may have seen the crash or either vehicle prior to the crash.
Anyone with any information is asked to call Crime Stoppers on 1800 333 000 or make a report online at crimestopperswa.com.au