Thieves stole a range of items from vehicles in a series of overnight break-ins.
The incidents all took place at around 1am on Tuesday morning and items including Sat Navs, iPods, handbags and tools were taken.
Two offences took place in Giffard Way, Long Crendon, and the remaining thefts took place in Churchway, Townsend, and The Closes in Haddenham.
Inspector James Davies said: “Three males were seen in the Brill area at the time of these offences.
“I would urge residents to contact us if they witnessed any suspicious persons and, or vehicles in the area at the time and date of these thefts.
“I would also like to take this opportunity to remind residents to please remain extra vigilant and make sure you report any suspicious activity to us immediately via the 101 number.“
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.