Police were called shortly before 6am this morning to a flat in a property on Barton Way, Dartmouth following reports of man in possession of a knife.
It was also reported that lights within the communal area of the property had been damaged.
Units including armed officers, and a police negotiator attended the scene.
A 46-year-old man from Dartmouth was arrested on suspicion of affray and criminal damage.
He remains in police custody.
Officers seized a knife from the address.