The Forensic Crash Unit is investigating a fatal crash at Dinmore overnight.
Preliminary investigations suggest a man was riding a motorbike westbound on the Warrego Highway around 6.30pm when he collided with a truck.
The 27-year-old Darra man sustained critical injuries and was pronounced deceased at the scene.
The 33-year-old truck driver was uninjured and is assisting police with their inquiries.
Any witnesses or anyone who may have dash cam vision is asked to contact police.