Armed police respond outside Parliament during an incident on Westminster Bridge in London, Britain March 22, 2017. (Stefan Wermuth/Reuters)
A policeman points a gun at a man on the floor as emergency services attend the scene outside the Palace of Westminster, London, Wednesday, March 22, 2017. London police say they are treating a gun and knife incident at Britain’s Parliament “as a terrorist incident until we know otherwise.” The Metropolitan Police says in a statement that the incident is ongoing. It is urging people to stay away from the area. Officials say a man with a knife attacked a police officer at Parliament and was shot by officers. Nearby, witnesses say a vehicle struck several people on the Westminster Bridge. (Stefan Rousseau/PA via AP).
A woman assist an injured person after an incident on Westminster Bridge in London, March 22, 2017. (Toby Melville /Reuters)
Attack outside the Houses of Parliament in London
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