Reports of possible gunfire near Britain's Parliament

Police secure the area on the south side of Westminster Bridge close to the Houses of Parliament in London, Wednesday, March 22, 2017. 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. (AP Photo/Matt Dunham) (The Associated Press)

Armed police officers enter the Houses of Parliament in London, Wednesday, March 23, 2017 after the House of Commons sitting was suspended as witnesses reported sounds like gunfire outside.(AP Photo/Kirsty Wigglesworth) (The Associated Press)

Police secure the area on the south side of Westminster Bridge close to the Houses of Parliament in London, Wednesday, March 22, 2017. 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. (AP Photo/Matt Dunham) (The Associated Press)