Police are investigating a rock throwing incident that took place at Port Augusta this week.
At 5.25am on Wednesday, a woman was driving south on the Augusta Highway and approaching the Joy Baluch Bridge when a man threw a rock at her car.
The impact caused the front driver's side window to smash and hit the woman in the shoulder, she sustained minor injuries.
Port Augusta police are appealing for any witnesses or vehicles with possible dashcam footage to contact them on 8648 5020.
The man was described as about 183cm tall with a skinny build and wearing black jeans, a black hooded top and black baseball cap.
Police believe a dark coloured dual cab ute was travelling directly behind the victim at the time and may have seen something.