British police have made more arrests after rounding up eight people in the wake of Wednesday's terror attack in London.
Yesterday's raids yielded two "significant" arrests, said its head of counter-terrorism Mark Rowley, made "on suspicion of preparation of terrorist acts". Seven of the eight arrested earlier are still in custody.
While Prime Minister Theresa May had said British-born Khalid Masood, 52, was believed to have acted alone when he ploughed into pedestrians on Westminster Bridge, then stabbed a police officer at the Houses of Parliament, detectives are now working to establish if he had other associates or was influenced by others.
Since the attack, investigators have interviewed as many as 3,500 witnesses. A clearer picture of Masood also emerged yesterday after his violent past came to light.
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