TWO people have been shot after a machete-wielding attacker ploughed a car into a group of people outside the Parliament building in a London terror incident.
A man with a knife has been seen within the confines of the Palace, eyewitnesses said.
Parliament has been placed on lockdown with MPs locked inside and armed police carrying shields protecting the building.
Reports suggest that 12 people have been injured.
A "police officer has been stabbed" and the "alleged assailant was shot by armed police", Commons Leader David Lidington has told MPs.
Metropolitan police said they were called to a firearms incident on Westminster Bridge
"We were called at approx 2:40 pm to reports of an incident at Westminster Bridge. Being treated as a firearms incident - police on scene," the cops said on Twitter.
Eyewitnesses report hearing a loud bang, then screaming and shooting.
A Downing Street source declined to say where Prime Minister Theresa May was during the attack, but said she had not been involved.
Pictures are emerging of multiple injured on Westminster bridge.
An air ambulance has arrived at the scene.
David Lidington told MPs: "The alleged assailant was shot by armed police, an ambulance is currently attending the scene to remove the casualities.
"There are also reports of further violent incidents in the Palace of Westminster but it would be wrong of me to go into further details before confirmation from the police."
TFL have confirmed that all Tube services have been cancelled for the time being.
It’s long past time to pass the Lawful Purpose and Self-Defense Act and rid us of language in federal gu control laws that does not acknowlege the natural right of self-defense.
Let’s face it… we’re living through some dangerous times… terrorist attacks, random shootings, violence and brutality have become part of our everyday lives…
It’s why I think now – perhaps even more than ever – America needs its citizens armed and ready.
After all, right now, the bad guys are training so that when they meet you, they beat you.
Shouldn’t you be doing the same?
Training yourself and seeking out instructions in Instant Combat Shooting… developing better marksmanship by improving your vision… and being aware of the Tactical Follow Through are guaranteed to help…
But…These skills are just the tip of the iceberg. Video Below