(Image: Archant Norfolk Photographic © 2011)
Police say a property on Manor Drive was broken into between between 4.30pm on Friday, December 2 and 10am the next day.
The offender or offenders forced the front door before stealing the bag and items of jewellery.
Officers want to hear from anyone who saw the incident or heard anything suspicious in the area.
Witnesses should call Det Con Sarah Walker at Thetford CID on 101.
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