A policeman has been stabbed and his apparent attacker shot by officers in a major security incident at the Houses of Parliament.
Around three shots rang out outside the Palace of Westminster after a man ran through the gates into the front yard of the parliamentary compound apparently waving a knife.
Two people were seen being treated on the ground in New Palace Yard amid shouts and screams.
An air ambulance landed in Parliament Square and a regular ambulance came in through the front gates as medics rushed to help the injured people.
Armed police cleared the area around the incident and Parliament Square was closed to traffic.
A Downing Street source confirmed that Prime Minister Theresa May was “OK”.
Mrs May was seen being ushered into a silver Jaguar car as what sounded like gunfire rang out at Parliament during the incident at around 2.45pm.
As the sitting in the House of Commons was suspended, Commons Leader David Lidington told MPs: “What I am able to say to the House is there has been a serious incident within the estate.
“It seems that a police officer has been stabbed, that the alleged assailant was shot by armed police.
“An air ambulance is currently attending the scene to remove the casualties.
“There are also reports of further violent incidents in the vicinity of the Palace of Westminster but I hope colleagues on all sides will appreciate that it’d be wrong of me to go into further details until we have confirmation from the police and from the House security authorities about what is going on.”