Police 'carry out controlled explosion in Westminster'

Police have reportedly performed a controlled explosion near Westminster, less than a mile away from the scene of a terrorist attack which claimed the lives of four people.The Metropolitan Police said officers found an unattended bag in Birdcage Walk, which runs between Westminster and Buckingham Palace.It came less than two days after terrorist Khalid Masood killed four people by driving through pedestrians on Westminster Bridge and trying to storm Parliament.