Woman killed in Russell Square attack was American citizen

• Attack was 'spontaneous' and attacker chose victims at random• Police arrest Norwegian national of Somali origin• No evidence that suspect has been radicalised, say police Russell Square stabbing - live updates A Norwegian national of Somali origin has been arrested on suspicion of murdering an American woman and injuring five others, including Britons, in what was described by police as a "spontaneous attack". Speaking outside Scotland Yard headquarters, Metropolitan police assistant co...