Officers have charged a man following a disturbance outside a block of flats in Maidstone.
While being taken into custody, he is alleged to have attempted to headbutt a police officer.
The man has subsequently been charged with making threats to cause serious physical harm while in possession of a kitchen knife, making threats to kill and assaulting an emergency worker. He remains in custody and is due to appear before Medway magistrates on Monday 8 February.