La terreur s’empare de Westminster

In this image taken from video police officers gather around a car adjacent to Houses of Parliament in London, Wednesday, March 23, 2017 after the House of Commons sitting was suspended as witnesses reported sounds like gunfire outside. The leader of Britain's House of Commons says a man has been shot by police at Parliament. David Liddington also said there were "reports of further violent incidents in the vicinity." (ITN via AP) Britain Parliament Incident

A body is covered by a sheet outside the Houses of Parliament, 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). Britain Parliament Incident

KEYSTONE

Emergency personnel tend to an injured person close to the Palace of Westminster, London, Wednesday, March 22, 2017. London police say officers called to a 'firearms incident' on Westminster Bridge, near Parliament. The leader of Britain's House of Commons says a man has been shot by police at Parliament. David Liddington also said there were "reports of further violent incidents in the vicinity." London's police said officers had been called to a firearms incident on Westminster Bridge, near the parliament. Britain's MI5 says it is too early to say if the incident is terror-related. (Yui Mok/PA via AP). Britain Parliament Incident

People stand near a crashed car and an injured person lying on the ground, right, on Bridge Street near the Houses of Parliament in London, Wednesday, March 22, 2017. Britain has been targeted Wednesday by what authorities are calling a terrorist incident, after vehicle mowed down pedestrians on London's Westminster Bridge, killing at least one woman and leaving others injured, around the same time as a knife-wielding attacker stabbed a police officer and was shot on the grounds outside Britain's Parliament. (James West via AP) Mandatory credit Britain Parliament Incident

In this image from video, a girl lying on the ground is treated by passers-by on the Embankment near to the Houses of Parliament in London, Wednesday March 22, 2017. Britain has been targeted Wednesday by what authorities are calling a terrorist incident, after vehicle mowed down pedestrians on London's Westminster Bridge, killing at least one woman and leaving others injured, around the same time as a knife-wielding attacker stabbed a police officer and was shot on the grounds outside Britain's Parliament. (AP Photo) Britain Parliament Incident

A road leading into the Houses of Parliament's Elizabeth Tower, containing the bell know as "Big Ben", is seen empty after being cordoned off in 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. (AP Photo/ Matt Dunham) Britain Parliament Incident

Emergency services attend to injured people 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). Britain Parliament Incident

Armed police walk past emergency services attending to injured people on the floor outside the Houses of Parliament, 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). Britain Parliament Incident

In this image taken from video police officers gather around a car adjacent to Houses of Parliament in London, Wednesday, March 23, 2017 after the House of Commons sitting was suspended as witnesses reported sounds like gunfire outside. The leader of Britain's House of Commons says a man has been shot by police at Parliament. David Liddington also said there were "reports of further violent incidents in the vicinity." (ITN via AP) Britain Parliament Incident

A body is covered by a sheet outside the Houses of Parliament, 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). Britain Parliament Incident

KEYSTONE

Emergency personnel tend to an injured person close to the Palace of Westminster, London, Wednesday, March 22, 2017. London police say officers called to a 'firearms incident' on Westminster Bridge, near Parliament. The leader of Britain's House of Commons says a man has been shot by police at Parliament. David Liddington also said there were "reports of further violent incidents in the vicinity." London's police said officers had been called to a firearms incident on Westminster Bridge, near the parliament. Britain's MI5 says it is too early to say if the incident is terror-related. (Yui Mok/PA via AP). Britain Parliament Incident

People stand near a crashed car and an injured person lying on the ground, right, on Bridge Street near the Houses of Parliament in London, Wednesday, March 22, 2017. Britain has been targeted Wednesday by what authorities are calling a terrorist incident, after vehicle mowed down pedestrians on London's Westminster Bridge, killing at least one woman and leaving others injured, around the same time as a knife-wielding attacker stabbed a police officer and was shot on the grounds outside Britain's Parliament. (James West via AP) Mandatory credit Britain Parliament Incident

In this image from video, a girl lying on the ground is treated by passers-by on the Embankment near to the Houses of Parliament in London, Wednesday March 22, 2017. Britain has been targeted Wednesday by what authorities are calling a terrorist incident, after vehicle mowed down pedestrians on London's Westminster Bridge, killing at least one woman and leaving others injured, around the same time as a knife-wielding attacker stabbed a police officer and was shot on the grounds outside Britain's Parliament. (AP Photo) Britain Parliament Incident

A road leading into the Houses of Parliament's Elizabeth Tower, containing the bell know as "Big Ben", is seen empty after being cordoned off in 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. (AP Photo/ Matt Dunham) Britain Parliament Incident

Emergency services attend to injured people 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). Britain Parliament Incident

Armed police walk past emergency services attending to injured people on the floor outside the Houses of Parliament, 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). Britain Parliament Incident

In this image taken from video police officers gather around a car adjacent to Houses of Parliament in London, Wednesday, March 23, 2017 after the House of Commons sitting was suspended as witnesses reported sounds like gunfire outside. The leader of Britain's House of Commons says a man has been shot by police at Parliament. David Liddington also said there were "reports of further violent incidents in the vicinity." (ITN via AP) Britain Parliament Incident