Derbyshire Police have confirmed a man was arrested by armed officers in Ilkeston last night (Monday May 22).
An armed police response unit was called to a property in Critchley Street just after 7pm.
A member of the public called the police to say a man had been seen carrying a gun in the area.
Officers found a man carrying an imitation firearm understood to be a BB gun.
A 50-year-old man was arrested in connection with the incident.