Moment two men are arrested in London's Hatton Garden diamond district after 'one made threats with a knife and another assaulted a police officer'
Crowds of bystanders witnessed the altercation, which took place on a busy shopping street in the jewellery quarter in Holborn, central London.
Moment two men are arrested in London's Hatton Garden diamond district after 'one made threats with a knife and another assaulted a police officer'
