A man stole meat from a Tesco Express store while having a samurai sword strapped to his back.
The man went into the shop in Cannon Street, Wellingborough, at about 2.40pm on Sunday and took a large quantity of meat before leaving and heading in the direction of the town centre.
A police spokesman said: “He had what is believed to be a samurai sword strapped to his back, although never used it and never made any threats while in the shop.
“Police would like to speak to anyone who may have witnessed this incident or who may have any information regarding it.”
The offender is white, about 5ft 9in, slim build, with short brown hair and wore a black hooded top with white stripes on the arms, dark blue jeans and dark brown shoes.
Witnesses or anyone with information about the incident is asked to contact police on 101 or Crimestoppers anonymously on 0800 555111.