Police are seeking witnesses to a crash between a car and a black Harley Davidson motorcycle on Great South Rd on Friday morning.

The two vehicles collided at 11.10am in Runciman, near Drury.

The motorcycle was travelling north.

Police are asking for anyone who saw the collision, or the black Harley Davidson motorcycle travelling north at that time, to contact Constable Graham Mako of the Serious Crash Investigation Unit on 09 215 4828.