Armed police were deployed in King's Lynn, Norfolk after reports of a man walking along the road with a knife.
Officers were called to the Gayton Road area of the town around 5pm on Sunday evening.
A man was arrested by unarmed police officers close to the Wildfowlers pub. A 31-year-old man remains in custody.
Norfolk Police say no members of the public or officers received any injuries as a result of this incident.