Kent Police is investigating an incident at McColls Newsagents in Orion Road, Rochester and appealing for witnesses and information.
Two men entered the shop around 6.30 am this morning, threatened staff and stole cash.
One of the men is described as white, of stocky or fat build, and was wearing a grey hooded top and grey bottoms with three white stripes running down each leg. The other man was also white and was wearing a dark blue tracksuit.
Officers are currently in the area making enquiries.
Anyone with information is asked to contact Kent Police on 101 or, alternatively, if you have information but would prefer to remain anonymous, call Kent Crimestoppers on 0800 555 111.