An outbuilding was broken into over the weekend - but no property was taken.
Police have launched an appeal to find the suspects, as during the break-in, damage was caused to the floor of the building.
It happened on Wisbech Road in Welney some time between 6pm on Saturday and 6am on Sunday.
The suspect was unsuccessful in taking any property.
Officers would like to speak to anyone who may have witnessed the incident.
Anyone with information is asked to get in touch by reporting it online, by emailing Joanne.Ford@norfolk.police.uk, or phoning 101 quoting crime reference 36/34272/24.
Alternatively, contact the independent charity Crimestoppers 100% anonymously on 0800 555 111.
