A man from Hemel Hempstead has been arrested after he threatened a group of people with a knife outside his house.
Police were called to Micklefield Road, Leverstock Green at 2.45pm yesterday, March 18, to reports of a man acting in an aggressive manner towards several people inside a car.
An eyewitness said there were four males in the car.
The vehicle then left and the male went back inside his address.
A 19 year old man from Hemel Hempstead has been arrested on suspicion of possession of an offensive weapon and possession of cannabis.
He remains in police custody at this time.