A woman has been killed and five other people injured in a knife rampage in central London.
The stabbings took place at around 10pm last night in Russell Square.
Minutes later police arrested a 19-year-old man at the scene and he is currently under police guard in hospital.
The Metropolitan Police have said that terrorism was one possible motive for the attack but that mental health may have been a 'significant factor'.
The dead woman is believed to be in 60s. The condition of those injured is not currently known.