MAJOR Crash officers are investigating a fatal crash in Secret Harbour last night.
The crash was at 7.30pm when a silver Toyota Supra Sedan was travelling east on Secret Harbour Boulevard and crashed into a tree.
A 16-year-old male (rear passenger) received serious injuries and was taken by ambulance to Royal Perth Hospital.
A 16-year-old male (rear passenger) and a 17-year-old male (front passenger) both received fatal injuries as a result of the crash.
The 19-year-old male driver of the vehicle was injured and was taken to Royal Perth Hospital. He is in a serious but stable condition.
Major Crash investigators are seeking anyone who may have seen the vehicle driving in the Secret Harbour area prior to the crash to call Crime Stoppers on 1800 333 000.