Dyfed-Powys Police are appealing for witnesses, following a fatal collision on the old Pembroke Road between Burton and Haverfordwest, this weekend.
The collision, between a transit van and a motorbike, happened around half a mile from Burton at around 6.45pm on Saturday.
A 17-year-old motorcyclist died in the collision.
The road was closed for several hours while police officers examined the scene.
Anyone with any information should contact the roads policing units at Haverfordwest police station on 101.