The car was halfway across the bridge driving into town on Friday, February 3 when it was pelted with 20 to 30 rocks from the river bed below.

“The first big rock hit the front window, a second went through the back hitting the cargo barrier a few inches from my son’s head,” the man, who chose to go unnamed, said. “We just want to get the word out, because it’s only a matter of time before someone gets hurt.” 

Senior Sergeant Renee Hanrahan said police did catch up with the assailants.

“In the course of the investigation it would appear they were doing that while passing through the area, moving on to another location, where further offences were committed,” Sergeant Hanrahan said.

“We have had significant property crime relating to four juveniles on 46 property related charges. This incident did form part of that investigation, however charges were not able to be preferred for this particular offence.”

This is not the first instance of rock throwing in Mount Isa, though no other cases were reported recently.