A man has been arrested on suspicion of assault after police were involved in a stand-off with a man armed with a knife in north-west London.
Met Police officers said they were called at about 15:45 BST to reports of a "disturbance" at an address in Headstone Lane, Harrow.
The force said a man in his 40s was arrested at about 21:30.
He was taken to a police station where he remains in custody, police said.
A second man was treated by London Ambulance Service for minor injuries.
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