A 53-year-old man has died after his motorcycle hit a fallen tree on Centenary Road yesterday afternoon.

The man was riding his black BMW bike in an easterly direction on the road near Bunbury Regional Prison at 5.30pm yesterday.

The bike hit the fallen tree and the man received critical injuries and was taken to Bunbury Hospital where he later died.

Major Crash Investigation officers are calling for anyone who saw the crash or the motorcycle in the area before the crash.

People with information should call Crime Stoppers on 1800 333 000 or to make a report online at www.crimestopperswa.com.au.