A man was threatened with his knife during a robbery in a Milton Keynes shop.
At around 8.30am on Saturday an offender entered a Londis shop in Downs Barn Boulevard.
He threatened the victim, a male member of staff in his thirties, with what is believed to have been a small knife before stealing money out of the till and tobacco.
No one was injured during the incident.
The offender was a white man, aged in his thirties, 6ft tall, of medium build. He was wearing a black puffa-style jacket, light blue jeans, a black and red scarf on his face, and a grey hooded top over a black baseball cap with white trainers.
Investigating officer Det Con Wayne Watson, from Milton Keynes Force CID, said: “I am appealing for any witnesses or anyone with any information about this incident to contact police.
“No one was injured during the incident but it was obviously a frightening experience for the man working in the shop.
“I would like to hear from anyone who saw anyone matching the description of the offender or anyone who saw anyone acting suspiciously in the area at the time of the offence.”
If you have any information about the incident please call the 24-hour Thames Valley Police Enquiry Centre on 101.
If you don’t want to speak directly to police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at Crimestoppers.
No personal details are taken, information is not traced and you will not go to court.