Hundreds of pounds of jewellery were stolen from two houses on the same day.
Police are linking the two burglaries, the first of which happened in Ladman Villas, Littleworth, near Faringdon, between noon and 2.25pm on Friday.
Witnesses reported seeing a suspicious red vehicle.
The second happened between 8.20am and 5.20pm at a house in Wootton Village.
Anyone with information should call police on 08458 505505 or Crimestoppers anonymously on 0800 555111.
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