A quantity of cash has been stolen from the Co-operative store in Kirton after an armed robbery on Saturday.
A Lincolnshire Police spokesman said that at about 10.40pm, night staff inside the store on Station Road, were threatened by a man described as white and English-speaking.
They said he was wearing a balaclava and a large knee-length grey mac, with dark tracksuit-style bottoms and trainers. He was carrying a knife.
Staff are said to have been left shaken up by the incident, which lasted around 10 minutes, but nobody was physically injured. The offender made off with a quantity of cash.
DC Sue-Ellen Wilson said: “A number of enquiries are being made in relation to the robbery at the Co-Op and I am keen to hear from anyone who might have been in the area near the shop at the time.
“Did you see a disturbance taking place, or see a man matching the description of the offender? Were you in a car parked close by and saw anything that you think might be important to the enquiry?”
Anyone with information should call 101 quoting incident 436 of December 27. Alternatively you can contact Crimestoppers anonymously on 0800 555 111.