Armed police and dog units were sent to an alleged domestic assault in Four Lanes near Redruth on Tuesday night (24/1) after the attacker was reported to have a knife.
Officers were called to a property at 8.15pm following the report of a domestic assault by a man on a woman.
Both firearms and local units attended, along with dog units, as the man was reported as causing damage to the property and in possession of a knife.
Police put containment measures on the address, and the woman was able to leave the property of her own accord.
A force spokesperson said: "Police negotiated with the man who voluntarily left the property around 10pm and was arrested."
A 43-year-old man has been arrested on suspicion of assault and criminal damage. He remains in custody in Camborne.
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