KEENE - Police are investigating an armed robbery that occurred at a convenience store Sunday afternoon.

Keene police were called to the KM Campus Convenience store on Winchester Street in Keene at 5:35 p.m. on a report of a robbery.

Police a male wearing a mask entered the store, displayed an unknown make and model handgun and demanded an undisclosed amount of cash from the register.

No injuries were reported. The thief is described as a white male, wearing a dark jacket with a hood, dark pants, and a dark mask.

The robber fled on foot from the store in a westerly direction. The case remains under investigation. Anyone with information is asked to call Keene police at 357-9813.