London attack: Police say terrorist Khalid Masood acted alone

The Westminster terrorist who killed four people and injured 50 when he rammed his car into pedestrians on Wednesday acted alone, according to police. Authorities concluded Khalid Masood planned the attacks on his own accord, while they continue to investigate his motives. Deputy Assistant Commissioner Neil Basu Police noted that it's possible they "will never understand why he [Masood] did this." The police are investigating whether