Major crash officers are investigating a fatal crash near Bunbury.
At around 5.30pm on Thursday, a 53-year-old man was riding his black BMW motorcycle in an easterly direction along Centenary Road in College Grove when the motorcycle hit a fallen tree.
The man received critical injuries and was conveyed by ambulance to Bunbury Hospital where he later died.
Investigators would like to speak to anyone that saw the crash, or the motorcycle travelling in the area prior to the crash.
Anyone with information is asked to call Crime Stoppers on 1800 333 000 or to make a report online at www.crimestopperswa.com.au.