Thieves entered a house in Kettering and stole two bags from the hall.
It is believed the burglars got into the property in Burns Road through an unlocked front door some time between 8am and 10am yesterday (Thursday, July 23).
The bags they took contained bank cards, money and a mobile phone.
Witnesses, or anyone who knows anything about this incident, should call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.