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The driver of a gritting lorry was lucky to escape injury after a brick was thrown at the windscreen.
The incident in New Ash Green on Monday was one of a number of reported attacks in which bricks and rocks were thrown at gritters and buses.
Kent County Council confirmed Monday's incident, which happened on Ash Road Between Olives Mill and Chapel Wood Road, leaving a lorry with a damaged windscreen.
The details emerged after @GrittingKent reported two attacks on Twitter, tweeting on Wednesday: "Sad to see another of our gritters had a brick thrown at it last night, a window broken, luckily the driver was not hurt - but he could have been! What kind of person thinks that is clever!!!??"
Arriva buses also reported a similar incident on Monday, stating: "#489 Due to youths throwing rocks at the 20:07 service out of Gravesend the 20:45 489 out of New Ash Green will not be running as it is returning to the depot with a smashed windscreen."
That was followed on Wednesday by a subsequent tweet, adding: "Due to youths targeting our services and trying to break the windows of the vehicles its with great regret I have had to pull the services from the New Ash Green Area. The 423 and the 489 service will be terminating at Longfield Station for the rest of this evening."
An Arriva spokesperson said: "We can confirm that on January 29, a missile was thrown at an Arriva bus in New Ash Green. Thankfully, there were no reported injuries and we are now assisting the police with their ongoing investigation."
Kent Police was unable to confirm further details.