Police are investigating an incident on the Southern Expressway, according to SA Police.
Just after 6pm today (Monday 25 June), a driver of a car was travelling towards Sugar Bush Road Foot Bridge on the Southern Expressway when an object struck the left passenger door of her vehicle.
No-one was seen in the area at the time or to be acting suspiciously and no items were found on the roadway. No injuries were caused and there was no damage to the car.
The matter is being investigated as a rock throwing incident, taking the total of suspected incidents to 43 in the area so far this year.
If anyone has any information about this incident, they are urged to contact Crime Stoppers on 1800 333 000.
Any motorist who experiences damage to their car while driving and believe this has been a deliberate act by another person, are asked to stop their vehicle when safe and contact the Police Assistance Line on 131444.
