BREAKING NEWS —
Here’s what we know via Sky News in London, according to an official source http://fxn.ws/2mUvV5j:
• One person, who is reportedly an attacker armed with a knife, has been shot by police in Old Palace Yard.• One police officer in Old Palace Yard has been injured and is being treated for knife-related injuries at the scene.• A dozen pedestrians were reportedly struck by a vehicle on Westminster Bridge.