Detectives are appealing for witnesses after a woman was found with serious injuries at the roadside in Cannock early on Saturday morning.
Police attended Belt Road along with an ambulance crew at around 3.40am.
The woman, who is in her fifties and from the local area, has been taken to hospital where her condition is described as serious.
It is not yet understood what led to her injuries and detectives are appealing for anyone who may have seen anything or has dashcam or CCTV footage in the area to come forward.
People are urged to contact Staffordshire police on 101 referring to incident 128 of 17 August.