A Dublin Bus was brought to a standstill at rush hour on Tuesday evening when a window was shattered by a rock.
The incident took place at 4:40 on the number 17 bus just outside Nutgrove Church.
Pat McHale who was a passenger on the bus at the time said: "A group of youths ran up towards the bus as it was stood in traffic.
"They had their faces covered and hoods up and one of them threw a rock at the window and smashed it. Thankfully nobody has been injured."
Passengers were transported onto a different bus following the incident.
In a statement to Dublin Live, Go Ahead Ireland said: "A number of youths were throwing stones at the bus and smashed the window at the emergency door."
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