Major security alert is under way at the Palace of Westminster after a man apparently carrying a knife charged through the gates into the front yard of the parliamentary compound.
Amid shouts and screams, sounds similar to gunfire rang out.
A man has reportedly been shot by police outside the Houses of Parliament.
Two people were seen to be lying within Old Palace Yard, immediately outside Westminster Hall.
The sitting in the House of Commons was suspended while police officers sealed off the area around the incident.
Immediately before the incident, at around 2.45pm, a crowd of passers-by was seen running from the direction of Westminster Bridge and around the corner into Parliament Square.
