Officers are appealing for witnesses after an incident at the Tesco store on London Road, Amesbury.
Around 1.45pm on Saturday 2 September 2017 a man in his late 20s entered the shop and starting shouting obscenities at staff before then leaving.
He is described as white, approximately 6' 2" tall, slim and was wearing a tan coloured jacket and blue jeans.
Although unhurt, staff were shaken by the incident.
If you heard or saw this incident or anything suspicious in this area at this time, please contact PC Andrew Morgan at Amesbury Police on 101 or anonymously, via Crimestoppers, on 0800 555 111.