A staff member was threatened with a large kitchen knife during a robbery at the Cellarbrations bottle shop on Ernest Cavanagh Street, Gungahlin, on Monday afternoon.

The robber fled the store with a sum of cash and was last seen running along Gribble Street towards Bunnings.

From security camera video, police describe him as Caucasian in appearance with facial hair, and was wearing a black shirt, dark shorts and a black beanie.

Witnesses should call 1300 333000 or via the Crime Stoppers ACT website.