An elderly couple are being targeted by egg-throwing vandals in what police describe as motiveless attacks.
Bloxham village beat officer Pc Pat McDonald is asking parents to quiz children in a bid to find the culprits.
The elderly couple, both in their 90s, live on the Chipperfield Estate.
Pc McDonald said: "The attacks are causing them alarm and distress. Perhaps the offenders do not realise the trouble they are causing, but if their grandparents were the victims they would be very concerned."
He said the eggs were being thrown at windows and doors and the attacks had been going on for three months.
Pc McDonald said: "We think youths aged ten to 16 are involved. They also ring the doorbell and run off."
He has asked neighbours to be on the look-out, but said: "It only takes a second to throw an egg and run off."
Call Pc McDonald on 01295 754550 with any information about the attacks.
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