Officers from Staffordshire Moorlands Local Policing Team (LPT) are appealing for witnesses following an incident in Endon.
On Sunday 15 September at around 7.30pm a woman was walking her dog near to Clay Lake when she was approached by a dark orange coloured Audi 4.
The passenger in the car threw an egg and another object at the woman hitting her on the back and leg.
The car then drove off in the direction of Norton.
The woman was left shaken and sustained minor injuries following the incident.
Anyone with any information is asked to contact Staffordshire Police on 101 quoting incident number 668 of September 15.