Police said mental illness and the possibility of a terror motive were being investigated as they arrested a 19-year-old man who left a woman dead and five other people injured in a knife attack in central London.
Officers fired an electric stun gun as they arrested the 19-year-old man. Police had been called to the incident in Russell Square near the British Museum just after 10.30pm on Wednesday. The suspect was taken to hospital where he remained in police custody. Three of those injured were discharged on Thursday morning.
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