Northamptonshire police are appealing for information following an aggravated burglary at a house in Spinney Drive, Collingtree, last night (1 January).
A man and a woman were at their home in Spinney Drive when three men, all wearing balaclavas, entered the property at around 8.15pm.
The men were carrying at least two knives between them - they threatened the woman, who was in the kitchen, and forced the man onto the floor of the lounge.
Both the man and woman were tied up and the woman sustained a minor injury to her arm.
The men demanded money and jewellery and carried out a full search of the house - they left the property having stolen mobile phones, tablet computers and jewellery.