South West Traffic officers are seeking information regarding a fatal motorcycle crash in Leschenault on Wednesday night.
About 10.55pm a Honda motorcycle was being ridden south on Forrest Highway.
Approximately 200 metres south of Marriott Road the motorcycle left the road and collided with a metal barrier.
Australind Police and Bunbury Police attended the scene and it was confirmed the rider, a 40-year-old man from Withers, was deceased.
Anyone with information regarding this crash, or who saw the Honda motorcycle prior to the crash, is asked to call Crime Stoppers on 1800 333 000 or report the information online at crimestopperswa.com.au.