Thames Valley Police is appealing for witnesses.
Tuesday afternoon (27th August) two vehicles had windows smashed on Chinnor Hill and items were stolen from one vehicle.
A beige Kia Picanto had a rear windscreen smashed but nothing was stolen.
A black Ford Fiesta had both passenger windows smashed, a rucksack and wallet were stolen.
If you live locally please check any CCTV. If you have any information please call 101 and quote ref 43190264821.