Burglars stole cash and jewellery after entering a 92-year-old woman's home in Adderbury.
Between 6pm and 10pm on Monday, the woman, who lives alone, was watching television in her living room.
When going to bed at 10pm she discovered that her bedroom had been searched and the following items stolen: £800 in cash, two bank books, a pewter teapot, a metal hot water jug, an aquamarine ring, a sapphire ring with gold band and a platinum ring.
Police said there were no signs of forced entry, it is thought the victim had mistakenly left a door unlocked.
Anyone with any information about this incident is asked to contact PC Jane May at Banbury Priority Crime Team via 0845 8 505 505, or if you don't want to talk to the police or give your name, call the Crimestoppers charity on 0800 555 111.
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