Two houses in the same Wellingborough street were broken into on the same evening.
The incidents happened at two separate homes in Northampton Road on the evening on Friday, December 18.
The first burglary took place some time between 12.30pm and 8pm, with the offenders breaking a window to gain entry to the house.
Once inside they stole mobile phones and jewellery.
The second incident took place some time between 5.45pm and 8pm, with a window also broken to gain entry and jewellery again stolen.
A spokesman for Northamptonshire Police confirmed the houses were near to each other and the burglaries were being linked.
Police would like to speak to anyone who may have witnessed either incident or who saw anyone acting suspiciously in the area at the time.
Those with information should contact police on 101 or Crimestoppers anonymously on 0800 555111.