The incident happened at around 9.50pm, between the PC World roundabout and the Abergwili roundabout, and involved six vehicles. Before officers arrived, the force said it received further reports indicating that the pedestrian had already been struck by several vehicles. "Following officers being deployed, further reports then indicated that several vehicles had collided with the pedestrian prior to officers’ arrival. Both carriageways of the road are likely to remain closed for a lengthy period of time today while officers remain at the scene. The spokesperson explained: "Both carriageways of the road are likely to remain closed for a lengthy period of time today while officers remain at the scene.