Thieves stole jewellery from a Wellingborough house after forcing open a window.
The incident took place at a property in Castle Street at some point between 9.30am on Saturday, May 7, and 4pm on Friday, May 13.
The offenders forced open a window and searched the premises, before stealing jewellery and making off from the back of the house.
Officers would like to speak to anyone who may have witnessed this incident or who may have any information regarding it.
They would particularly like to speak to a man who was seen in the area.
He was a white man in his 30s, with a Mohican type haircut, and was sat on the corner of the street.
Witnesses or anyone with information about this incident is asked to contact police on 101 or Crimestoppers anonymously on 0800 555111.