Four people have been killed in a knife attack in the Southwark area of south London.
Police say an incident was reported on Delaford Road last night. Police found four people stabbed in a house, and the injured died despite efforts by the emergency services. One person has been arrested.
Police say an arrested man has been transferred to the South London Police Station and an investigation has been launched into the killing of four people.
It is believed that several people have been killed in knife attacks in London before this, while some time ago a mosque was also attacked with knives during prayers.