A member of staff at a shop in Southam was threatened with needle during a theft.
The incident happened at around midday on August 24 at a store in Kineton Road Industrial Estate.
A man entered the store and took a bottle of spirits from the display, and attempted to leave without payment.
When he was challenged, he threatened a staff member with a needle.
He then left at the rear of the store, and continued towards Southam town centre on foot.
He has been described to police as a white male in his 30s, 6'4", slim, short dirty hair, bad teeth. He was wearing a short blue jacket, dirty jeans/khaki trousers and trainers.
Police are currently examining CCTV footage.
Anyone with any information about the incident should contact Warwickshire police on 101, quoting incident number 184 on August 24.