A GROUP of youths are being interviewed by police over an incident that saw cars pelted with rocks on the Pacific Highway north of Coffs Harbour on Saturday night.
The teenagers are believed to have thrown rocks from the Luke Bowen Memorial Footbridge at Korora.
Passing motorists called police on two occasions at 5.15pm and again at 7pm.
On the first occasion police responded and commenced a search but were unable to locate the offenders.
Motorists reported a second spate of rock throwings and police spoke to two youths on James Small Dr and a third youth a short time later.
Police say they are assisting with their enquiries and expect the matter to be concluded soon.
At least seven motor vehicles were known to have sustained windscreen damage.
A vehicle owned by Bucca resident Jamie Parker had its windscreen smashed, with the force of the impact also smashing his number plate and frame and even marking the bullbar.
"I had my nine-year-old son in the car as well as a friend," Jamie said.
"It was irresponsible and dangerous.
He said a rock struck the bottom of his windscreen and could have caused him to swerve or lose control of the vehicle.
The location of the incident is in a 100 kph zone and witnesses are amazed and thankful one of the projectiles did not strike a driver or passenger directly, causing even worse injuries.
Investigating police found two piles of rocks left behind at the scene.
Motorists who may have sustained damage or anybody with information about the incident should call Crime Stoppers on 1800 333 000.